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Finding the Fourth Proportional to 18,678.92, 25,776.92 and 10,612.59

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Solution

The fourth proportional to 18,678.92, 25,776.92 and 10,612.59 is: 14,645.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.92 : 25,776.92 = 10,612.59 : x
  2. Step 2: Convert to fraction form
    18,678.92/25,776.92 = 10,612.59/x
  3. Step 3: Cross multiply
    18,678.92x = 25,776.92 × 10,612.59
  4. Step 4: Simplify right side
    18,678.92x = 273,559,883.42
  5. Step 5: Solve for x
    x = 273,559,883.42/18,678.92
  6. Step 6: Final answer
    x = 14,645.38

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Similar ratio
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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.