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Finding the Fourth Proportional to 26,385,966.88, 36,413,978.25 and 15,218,306.85

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Solution

The fourth proportional to 26,385,966.88, 36,413,978.25 and 15,218,306.85 is: 21,002,038.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,385,966.88 : 36,413,978.25 = 15,218,306.85 : x
  2. Step 2: Convert to fraction form
    26,385,966.88/36,413,978.25 = 15,218,306.85/x
  3. Step 3: Cross multiply
    26,385,966.88x = 36,413,978.25 × 15,218,306.85
  4. Step 4: Simplify right side
    26,385,966.88x = 554,159,094,728,760.94
  5. Step 5: Solve for x
    x = 554,159,094,728,760.94/26,385,966.88
  6. Step 6: Final answer
    x = 21,002,038.59

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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.