Home / 18,812.28-28,207.62-5,660.76

Finding the Fourth Proportional to 18,812.28, 28,207.62 and 5,660.76

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Solution

The fourth proportional to 18,812.28, 28,207.62 and 5,660.76 is: 8,487.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.28 : 28,207.62 = 5,660.76 : x
  2. Step 2: Convert to fraction form
    18,812.28/28,207.62 = 5,660.76/x
  3. Step 3: Cross multiply
    18,812.28x = 28,207.62 × 5,660.76
  4. Step 4: Simplify right side
    18,812.28x = 159,676,566.99
  5. Step 5: Solve for x
    x = 159,676,566.99/18,812.28
  6. Step 6: Final answer
    x = 8,487.89

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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.