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Finding the Fourth Proportional to 25,657.76, 38,456.76 and 10,861.76

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Solution

The fourth proportional to 25,657.76, 38,456.76 and 10,861.76 is: 16,279.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,657.76 : 38,456.76 = 10,861.76 : x
  2. Step 2: Convert to fraction form
    25,657.76/38,456.76 = 10,861.76/x
  3. Step 3: Cross multiply
    25,657.76x = 38,456.76 × 10,861.76
  4. Step 4: Simplify right side
    25,657.76x = 417,708,097.50
  5. Step 5: Solve for x
    x = 417,708,097.50/25,657.76
  6. Step 6: Final answer
    x = 16,279.99

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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.