Home / 39,375.60-54,338.40-21,470.76

Finding the Fourth Proportional to 39,375.60, 54,338.40 and 21,470.76

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Solution

The fourth proportional to 39,375.60, 54,338.40 and 21,470.76 is: 29,629.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,375.60 : 54,338.40 = 21,470.76 : x
  2. Step 2: Convert to fraction form
    39,375.60/54,338.40 = 21,470.76/x
  3. Step 3: Cross multiply
    39,375.60x = 54,338.40 × 21,470.76
  4. Step 4: Simplify right side
    39,375.60x = 1,166,686,745.18
  5. Step 5: Solve for x
    x = 1,166,686,745.18/39,375.60
  6. Step 6: Final answer
    x = 29,629.69

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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.