Home / 39,240.40-54,151.86-21,335.44

Finding the Fourth Proportional to 39,240.40, 54,151.86 and 21,335.44

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Solution

The fourth proportional to 39,240.40, 54,151.86 and 21,335.44 is: 29,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.40 : 54,151.86 = 21,335.44 : x
  2. Step 2: Convert to fraction form
    39,240.40/54,151.86 = 21,335.44/x
  3. Step 3: Cross multiply
    39,240.40x = 54,151.86 × 21,335.44
  4. Step 4: Simplify right side
    39,240.40x = 1,155,353,759.92
  5. Step 5: Solve for x
    x = 1,155,353,759.92/39,240.40
  6. Step 6: Final answer
    x = 29,442.97

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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.