Home / 18,861.64-28,292.61-5,715.04

Finding the Fourth Proportional to 18,861.64, 28,292.61 and 5,715.04

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Solution

The fourth proportional to 18,861.64, 28,292.61 and 5,715.04 is: 8,572.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.64 : 28,292.61 = 5,715.04 : x
  2. Step 2: Convert to fraction form
    18,861.64/28,292.61 = 5,715.04/x
  3. Step 3: Cross multiply
    18,861.64x = 28,292.61 × 5,715.04
  4. Step 4: Simplify right side
    18,861.64x = 161,693,397.85
  5. Step 5: Solve for x
    x = 161,693,397.85/18,861.64
  6. Step 6: Final answer
    x = 8,572.61

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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.