Home / 28,343,661,708.40-42,515,492,562.60-20,997,021,324.40

Finding the Fourth Proportional to 28,343,661,708.40, 42,515,492,562.60 and 20,997,021,324.40

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Solution

The fourth proportional to 28,343,661,708.40, 42,515,492,562.60 and 20,997,021,324.40 is: 31,495,531,986.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343,661,708.40 : 42,515,492,562.60 = 20,997,021,324.40 : x
  2. Step 2: Convert to fraction form
    28,343,661,708.40/42,515,492,562.60 = 20,997,021,324.40/x
  3. Step 3: Cross multiply
    28,343,661,708.40x = 42,515,492,562.60 × 20,997,021,324.40
  4. Step 4: Simplify right side
    28,343,661,708.40x = 892,698,703,954,281,889,792
  5. Step 5: Solve for x
    x = 892,698,703,954,281,889,792/28,343,661,708.40
  6. Step 6: Final answer
    x = 31,495,531,986.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.