Home / 39,245.57-54,158.62-21,340.59

Finding the Fourth Proportional to 39,245.57, 54,158.62 and 21,340.59

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Solution

The fourth proportional to 39,245.57, 54,158.62 and 21,340.59 is: 29,449.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,245.57 : 54,158.62 = 21,340.59 : x
  2. Step 2: Convert to fraction form
    39,245.57/54,158.62 = 21,340.59/x
  3. Step 3: Cross multiply
    39,245.57x = 54,158.62 × 21,340.59
  4. Step 4: Simplify right side
    39,245.57x = 1,155,776,904.39
  5. Step 5: Solve for x
    x = 1,155,776,904.39/39,245.57
  6. Step 6: Final answer
    x = 29,449.87

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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.