Home / 15,839.15-21,857.95-9,125.97

Finding the Fourth Proportional to 15,839.15, 21,857.95 and 9,125.97

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Solution

The fourth proportional to 15,839.15, 21,857.95 and 9,125.97 is: 12,593.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.15 : 21,857.95 = 9,125.97 : x
  2. Step 2: Convert to fraction form
    15,839.15/21,857.95 = 9,125.97/x
  3. Step 3: Cross multiply
    15,839.15x = 21,857.95 × 9,125.97
  4. Step 4: Simplify right side
    15,839.15x = 199,474,925.40
  5. Step 5: Solve for x
    x = 199,474,925.40/15,839.15
  6. Step 6: Final answer
    x = 12,593.79

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1.5x scale

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.