Home / 21,569.60-29,765.94-12,138.24

Finding the Fourth Proportional to 21,569.60, 29,765.94 and 12,138.24

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Solution

The fourth proportional to 21,569.60, 29,765.94 and 12,138.24 is: 16,750.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,569.60 : 29,765.94 = 12,138.24 : x
  2. Step 2: Convert to fraction form
    21,569.60/29,765.94 = 12,138.24/x
  3. Step 3: Cross multiply
    21,569.60x = 29,765.94 × 12,138.24
  4. Step 4: Simplify right side
    21,569.60x = 361,306,123.55
  5. Step 5: Solve for x
    x = 361,306,123.55/21,569.60
  6. Step 6: Final answer
    x = 16,750.71

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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.