Home / 20,020.60-29,861.68-18,864.28

Finding the Fourth Proportional to 20,020.60, 29,861.68 and 18,864.28

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Solution

The fourth proportional to 20,020.60, 29,861.68 and 18,864.28 is: 28,136.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.60 : 29,861.68 = 18,864.28 : x
  2. Step 2: Convert to fraction form
    20,020.60/29,861.68 = 18,864.28/x
  3. Step 3: Cross multiply
    20,020.60x = 29,861.68 × 18,864.28
  4. Step 4: Simplify right side
    20,020.60x = 563,319,092.79
  5. Step 5: Solve for x
    x = 563,319,092.79/20,020.60
  6. Step 6: Final answer
    x = 28,136.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.