Home / 18,385.28-25,383.72-12,737.35

Finding the Fourth Proportional to 18,385.28, 25,383.72 and 12,737.35

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Solution

The fourth proportional to 18,385.28, 25,383.72 and 12,737.35 is: 17,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.28 : 25,383.72 = 12,737.35 : x
  2. Step 2: Convert to fraction form
    18,385.28/25,383.72 = 12,737.35/x
  3. Step 3: Cross multiply
    18,385.28x = 25,383.72 × 12,737.35
  4. Step 4: Simplify right side
    18,385.28x = 323,321,325.94
  5. Step 5: Solve for x
    x = 323,321,325.94/18,385.28
  6. Step 6: Final answer
    x = 17,585.88

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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.