Home / 18,438.57-25,445.39-10,055.61

Finding the Fourth Proportional to 18,438.57, 25,445.39 and 10,055.61

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Solution

The fourth proportional to 18,438.57, 25,445.39 and 10,055.61 is: 13,876.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.57 : 25,445.39 = 10,055.61 : x
  2. Step 2: Convert to fraction form
    18,438.57/25,445.39 = 10,055.61/x
  3. Step 3: Cross multiply
    18,438.57x = 25,445.39 × 10,055.61
  4. Step 4: Simplify right side
    18,438.57x = 255,868,867.86
  5. Step 5: Solve for x
    x = 255,868,867.86/18,438.57
  6. Step 6: Final answer
    x = 13,876.83

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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.