Home / 20,142,918.09-30,211,341.53-12,906,943.25

Finding the Fourth Proportional to 20,142,918.09, 30,211,341.53 and 12,906,943.25

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Solution

The fourth proportional to 20,142,918.09, 30,211,341.53 and 12,906,943.25 is: 19,358,469.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142,918.09 : 30,211,341.53 = 12,906,943.25 : x
  2. Step 2: Convert to fraction form
    20,142,918.09/30,211,341.53 = 12,906,943.25/x
  3. Step 3: Cross multiply
    20,142,918.09x = 30,211,341.53 × 12,906,943.25
  4. Step 4: Simplify right side
    20,142,918.09x = 389,936,070,634,078.19
  5. Step 5: Solve for x
    x = 389,936,070,634,078.19/20,142,918.09
  6. Step 6: Final answer
    x = 19,358,469.76

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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.