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Finding the Fourth Proportional to 10,869.71, 15,000.26 and 6,393.65

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Solution

The fourth proportional to 10,869.71, 15,000.26 and 6,393.65 is: 8,823.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,869.71 : 15,000.26 = 6,393.65 : x
  2. Step 2: Convert to fraction form
    10,869.71/15,000.26 = 6,393.65/x
  3. Step 3: Cross multiply
    10,869.71x = 15,000.26 × 6,393.65
  4. Step 4: Simplify right side
    10,869.71x = 95,906,305.38
  5. Step 5: Solve for x
    x = 95,906,305.38/10,869.71
  6. Step 6: Final answer
    x = 8,823.27

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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.