Home / 15,839.05-21,857.61-9,124.66

Finding the Fourth Proportional to 15,839.05, 21,857.61 and 9,124.66

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Solution

The fourth proportional to 15,839.05, 21,857.61 and 9,124.66 is: 12,591.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.05 : 21,857.61 = 9,124.66 : x
  2. Step 2: Convert to fraction form
    15,839.05/21,857.61 = 9,124.66/x
  3. Step 3: Cross multiply
    15,839.05x = 21,857.61 × 9,124.66
  4. Step 4: Simplify right side
    15,839.05x = 199,443,259.66
  5. Step 5: Solve for x
    x = 199,443,259.66/15,839.05
  6. Step 6: Final answer
    x = 12,591.87

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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.