Home / 20,861,738,409.20-31,292,607,613.80-12,576,360,642.80

Finding the Fourth Proportional to 20,861,738,409.20, 31,292,607,613.80 and 12,576,360,642.80

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Solution

The fourth proportional to 20,861,738,409.20, 31,292,607,613.80 and 12,576,360,642.80 is: 18,864,540,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861,738,409.20 : 31,292,607,613.80 = 12,576,360,642.80 : x
  2. Step 2: Convert to fraction form
    20,861,738,409.20/31,292,607,613.80 = 12,576,360,642.80/x
  3. Step 3: Cross multiply
    20,861,738,409.20x = 31,292,607,613.80 × 12,576,360,642.80
  4. Step 4: Simplify right side
    20,861,738,409.20x = 393,547,118,804,777,893,888
  5. Step 5: Solve for x
    x = 393,547,118,804,777,893,888/20,861,738,409.20
  6. Step 6: Final answer
    x = 18,864,540,964.20

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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.