Home / 39,236.47-54,147.39-21,332.71

Finding the Fourth Proportional to 39,236.47, 54,147.39 and 21,332.71

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Solution

The fourth proportional to 39,236.47, 54,147.39 and 21,332.71 is: 29,439.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,236.47 : 54,147.39 = 21,332.71 : x
  2. Step 2: Convert to fraction form
    39,236.47/54,147.39 = 21,332.71/x
  3. Step 3: Cross multiply
    39,236.47x = 54,147.39 × 21,332.71
  4. Step 4: Simplify right side
    39,236.47x = 1,155,110,568.13
  5. Step 5: Solve for x
    x = 1,155,110,568.13/39,236.47
  6. Step 6: Final answer
    x = 29,439.72

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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.