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Finding the Fourth Proportional to 15,809.80, 23,715.11 and 7,487.86

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Solution

The fourth proportional to 15,809.80, 23,715.11 and 7,487.86 is: 11,231.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.80 : 23,715.11 = 7,487.86 : x
  2. Step 2: Convert to fraction form
    15,809.80/23,715.11 = 7,487.86/x
  3. Step 3: Cross multiply
    15,809.80x = 23,715.11 × 7,487.86
  4. Step 4: Simplify right side
    15,809.80x = 177,575,423.56
  5. Step 5: Solve for x
    x = 177,575,423.56/15,809.80
  6. Step 6: Final answer
    x = 11,231.98

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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.