Home / 15,304,454.64-21,121,102.56-8,428,934.88

Finding the Fourth Proportional to 15,304,454.64, 21,121,102.56 and 8,428,934.88

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Solution

The fourth proportional to 15,304,454.64, 21,121,102.56 and 8,428,934.88 is: 11,632,456.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304,454.64 : 21,121,102.56 = 8,428,934.88 : x
  2. Step 2: Convert to fraction form
    15,304,454.64/21,121,102.56 = 8,428,934.88/x
  3. Step 3: Cross multiply
    15,304,454.64x = 21,121,102.56 × 8,428,934.88
  4. Step 4: Simplify right side
    15,304,454.64x = 178,028,398,072,041.31
  5. Step 5: Solve for x
    x = 178,028,398,072,041.31/15,304,454.64
  6. Step 6: Final answer
    x = 11,632,456.19

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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.