Home / 28,218,167.43-38,940,992.06-15,661,117.85

Finding the Fourth Proportional to 28,218,167.43, 38,940,992.06 and 15,661,117.85

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Solution

The fourth proportional to 28,218,167.43, 38,940,992.06 and 15,661,117.85 is: 21,612,298.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218,167.43 : 38,940,992.06 = 15,661,117.85 : x
  2. Step 2: Convert to fraction form
    28,218,167.43/38,940,992.06 = 15,661,117.85/x
  3. Step 3: Cross multiply
    28,218,167.43x = 38,940,992.06 × 15,661,117.85
  4. Step 4: Simplify right side
    28,218,167.43x = 609,859,465,905,773.88
  5. Step 5: Solve for x
    x = 609,859,465,905,773.88/28,218,167.43
  6. Step 6: Final answer
    x = 21,612,298.79

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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.