Home / 20,781.50-28,660.74-17,566.89

Finding the Fourth Proportional to 20,781.50, 28,660.74 and 17,566.89

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Solution

The fourth proportional to 20,781.50, 28,660.74 and 17,566.89 is: 24,227.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781.50 : 28,660.74 = 17,566.89 : x
  2. Step 2: Convert to fraction form
    20,781.50/28,660.74 = 17,566.89/x
  3. Step 3: Cross multiply
    20,781.50x = 28,660.74 × 17,566.89
  4. Step 4: Simplify right side
    20,781.50x = 503,479,893.55
  5. Step 5: Solve for x
    x = 503,479,893.55/20,781.50
  6. Step 6: Final answer
    x = 24,227.32

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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.