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Finding the Fourth Proportional to 10,581.71, 15,866.89 and 4,339.85

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Solution

The fourth proportional to 10,581.71, 15,866.89 and 4,339.85 is: 6,507.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,581.71 : 15,866.89 = 4,339.85 : x
  2. Step 2: Convert to fraction form
    10,581.71/15,866.89 = 4,339.85/x
  3. Step 3: Cross multiply
    10,581.71x = 15,866.89 × 4,339.85
  4. Step 4: Simplify right side
    10,581.71x = 68,859,832.38
  5. Step 5: Solve for x
    x = 68,859,832.38/10,581.71
  6. Step 6: Final answer
    x = 6,507.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.