Home / 18,414.60-25,414.20-12,458.40

Finding the Fourth Proportional to 18,414.60, 25,414.20 and 12,458.40

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Solution

The fourth proportional to 18,414.60, 25,414.20 and 12,458.40 is: 17,193.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,414.60 : 25,414.20 = 12,458.40 : x
  2. Step 2: Convert to fraction form
    18,414.60/25,414.20 = 12,458.40/x
  3. Step 3: Cross multiply
    18,414.60x = 25,414.20 × 12,458.40
  4. Step 4: Simplify right side
    18,414.60x = 316,620,269.28
  5. Step 5: Solve for x
    x = 316,620,269.28/18,414.60
  6. Step 6: Final answer
    x = 17,193.98

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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.