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Finding the Fourth Proportional to 17,777.81, 24,532.20 and 9,819.97

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Solution

The fourth proportional to 17,777.81, 24,532.20 and 9,819.97 is: 13,550.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,777.81 : 24,532.20 = 9,819.97 : x
  2. Step 2: Convert to fraction form
    17,777.81/24,532.20 = 9,819.97/x
  3. Step 3: Cross multiply
    17,777.81x = 24,532.20 × 9,819.97
  4. Step 4: Simplify right side
    17,777.81x = 240,905,406.70
  5. Step 5: Solve for x
    x = 240,905,406.70/17,777.81
  6. Step 6: Final answer
    x = 13,550.90

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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.