Home / 12,715.53-17,557.85-8,246.87

Finding the Fourth Proportional to 12,715.53, 17,557.85 and 8,246.87

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Solution

The fourth proportional to 12,715.53, 17,557.85 and 8,246.87 is: 11,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.53 : 17,557.85 = 8,246.87 : x
  2. Step 2: Convert to fraction form
    12,715.53/17,557.85 = 8,246.87/x
  3. Step 3: Cross multiply
    12,715.53x = 17,557.85 × 8,246.87
  4. Step 4: Simplify right side
    12,715.53x = 144,797,305.85
  5. Step 5: Solve for x
    x = 144,797,305.85/12,715.53
  6. Step 6: Final answer
    x = 11,387.44

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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.