Home / 15,528,400.85-21,429,278.19-9,005,897.52

Finding the Fourth Proportional to 15,528,400.85, 21,429,278.19 and 9,005,897.52

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Solution

The fourth proportional to 15,528,400.85, 21,429,278.19 and 9,005,897.52 is: 12,428,187.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528,400.85 : 21,429,278.19 = 9,005,897.52 : x
  2. Step 2: Convert to fraction form
    15,528,400.85/21,429,278.19 = 9,005,897.52/x
  3. Step 3: Cross multiply
    15,528,400.85x = 21,429,278.19 × 9,005,897.52
  4. Step 4: Simplify right side
    15,528,400.85x = 192,989,883,306,711.09
  5. Step 5: Solve for x
    x = 192,989,883,306,711.09/15,528,400.85
  6. Step 6: Final answer
    x = 12,428,187.88

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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.