Home / 21,392,701.52-29,522,331.24-13,128,630.08

Finding the Fourth Proportional to 21,392,701.52, 29,522,331.24 and 13,128,630.08

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Solution

The fourth proportional to 21,392,701.52, 29,522,331.24 and 13,128,630.08 is: 18,117,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392,701.52 : 29,522,331.24 = 13,128,630.08 : x
  2. Step 2: Convert to fraction form
    21,392,701.52/29,522,331.24 = 13,128,630.08/x
  3. Step 3: Cross multiply
    21,392,701.52x = 29,522,331.24 × 13,128,630.08
  4. Step 4: Simplify right side
    21,392,701.52x = 387,587,765,949,187.69
  5. Step 5: Solve for x
    x = 387,587,765,949,187.69/21,392,701.52
  6. Step 6: Final answer
    x = 18,117,756.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.