Home / 39,240.81-54,152.19-21,335.85

Finding the Fourth Proportional to 39,240.81, 54,152.19 and 21,335.85

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Solution

The fourth proportional to 39,240.81, 54,152.19 and 21,335.85 is: 29,443.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,240.81 : 54,152.19 = 21,335.85 : x
  2. Step 2: Convert to fraction form
    39,240.81/54,152.19 = 21,335.85/x
  3. Step 3: Cross multiply
    39,240.81x = 54,152.19 × 21,335.85
  4. Step 4: Simplify right side
    39,240.81x = 1,155,383,003.01
  5. Step 5: Solve for x
    x = 1,155,383,003.01/39,240.81
  6. Step 6: Final answer
    x = 29,443.40

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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.