Home / 38,120.55-57,104.28-21,455.61

Finding the Fourth Proportional to 38,120.55, 57,104.28 and 21,455.61

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Solution

The fourth proportional to 38,120.55, 57,104.28 and 21,455.61 is: 32,140.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,120.55 : 57,104.28 = 21,455.61 : x
  2. Step 2: Convert to fraction form
    38,120.55/57,104.28 = 21,455.61/x
  3. Step 3: Cross multiply
    38,120.55x = 57,104.28 × 21,455.61
  4. Step 4: Simplify right side
    38,120.55x = 1,225,207,161.01
  5. Step 5: Solve for x
    x = 1,225,207,161.01/38,120.55
  6. Step 6: Final answer
    x = 32,140.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.