Home / 20,502.52-28,295.22-11,551.78

Finding the Fourth Proportional to 20,502.52, 28,295.22 and 11,551.78

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Solution

The fourth proportional to 20,502.52, 28,295.22 and 11,551.78 is: 15,942.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.52 : 28,295.22 = 11,551.78 : x
  2. Step 2: Convert to fraction form
    20,502.52/28,295.22 = 11,551.78/x
  3. Step 3: Cross multiply
    20,502.52x = 28,295.22 × 11,551.78
  4. Step 4: Simplify right side
    20,502.52x = 326,860,156.49
  5. Step 5: Solve for x
    x = 326,860,156.49/20,502.52
  6. Step 6: Final answer
    x = 15,942.44

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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.