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Finding the Fourth Proportional to 20,601, 28,429.27 and 11,648.52

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Solution

The fourth proportional to 20,601, 28,429.27 and 11,648.52 is: 16,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601 : 28,429.27 = 11,648.52 : x
  2. Step 2: Convert to fraction form
    20,601/28,429.27 = 11,648.52/x
  3. Step 3: Cross multiply
    20,601x = 28,429.27 × 11,648.52
  4. Step 4: Simplify right side
    20,601x = 331,158,920.18
  5. Step 5: Solve for x
    x = 331,158,920.18/20,601
  6. Step 6: Final answer
    x = 16,074.90

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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.