Home / 11,385.62-15,712.08-6,349.90

Finding the Fourth Proportional to 11,385.62, 15,712.08 and 6,349.90

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Solution

The fourth proportional to 11,385.62, 15,712.08 and 6,349.90 is: 8,762.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.62 : 15,712.08 = 6,349.90 : x
  2. Step 2: Convert to fraction form
    11,385.62/15,712.08 = 6,349.90/x
  3. Step 3: Cross multiply
    11,385.62x = 15,712.08 × 6,349.90
  4. Step 4: Simplify right side
    11,385.62x = 99,770,136.79
  5. Step 5: Solve for x
    x = 99,770,136.79/11,385.62
  6. Step 6: Final answer
    x = 8,762.82

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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.