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Finding the Fourth Proportional to 18,458.40, 25,472.40 and 10,500.60

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Solution

The fourth proportional to 18,458.40, 25,472.40 and 10,500.60 is: 14,490.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458.40 : 25,472.40 = 10,500.60 : x
  2. Step 2: Convert to fraction form
    18,458.40/25,472.40 = 10,500.60/x
  3. Step 3: Cross multiply
    18,458.40x = 25,472.40 × 10,500.60
  4. Step 4: Simplify right side
    18,458.40x = 267,475,483.44
  5. Step 5: Solve for x
    x = 267,475,483.44/18,458.40
  6. Step 6: Final answer
    x = 14,490.72

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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.