Home / 10,742.68-16,125.80-8,535.70

Finding the Fourth Proportional to 10,742.68, 16,125.80 and 8,535.70

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Solution

The fourth proportional to 10,742.68, 16,125.80 and 8,535.70 is: 12,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.68 : 16,125.80 = 8,535.70 : x
  2. Step 2: Convert to fraction form
    10,742.68/16,125.80 = 8,535.70/x
  3. Step 3: Cross multiply
    10,742.68x = 16,125.80 × 8,535.70
  4. Step 4: Simplify right side
    10,742.68x = 137,644,948.38
  5. Step 5: Solve for x
    x = 137,644,948.38/10,742.68
  6. Step 6: Final answer
    x = 12,812.91

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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.