Home / 10,318.92-14,240.40-5,781.96

Finding the Fourth Proportional to 10,318.92, 14,240.40 and 5,781.96

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Solution

The fourth proportional to 10,318.92, 14,240.40 and 5,781.96 is: 7,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318.92 : 14,240.40 = 5,781.96 : x
  2. Step 2: Convert to fraction form
    10,318.92/14,240.40 = 5,781.96/x
  3. Step 3: Cross multiply
    10,318.92x = 14,240.40 × 5,781.96
  4. Step 4: Simplify right side
    10,318.92x = 82,337,423.18
  5. Step 5: Solve for x
    x = 82,337,423.18/10,318.92
  6. Step 6: Final answer
    x = 7,979.27

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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.