Home / 39,240.39-54,151.46-21,335.40

Finding the Fourth Proportional to 39,240.39, 54,151.46 and 21,335.40

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Solution

The fourth proportional to 39,240.39, 54,151.46 and 21,335.40 is: 29,442.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.39 : 54,151.46 = 21,335.40 : x
  2. Step 2: Convert to fraction form
    39,240.39/54,151.46 = 21,335.40/x
  3. Step 3: Cross multiply
    39,240.39x = 54,151.46 × 21,335.40
  4. Step 4: Simplify right side
    39,240.39x = 1,155,343,059.68
  5. Step 5: Solve for x
    x = 1,155,343,059.68/39,240.39
  6. Step 6: Final answer
    x = 29,442.70

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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.