Home / 39,236.90-54,146.33-21,331.75

Finding the Fourth Proportional to 39,236.90, 54,146.33 and 21,331.75

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Solution

The fourth proportional to 39,236.90, 54,146.33 and 21,331.75 is: 29,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,236.90 : 54,146.33 = 21,331.75 : x
  2. Step 2: Convert to fraction form
    39,236.90/54,146.33 = 21,331.75/x
  3. Step 3: Cross multiply
    39,236.90x = 54,146.33 × 21,331.75
  4. Step 4: Simplify right side
    39,236.90x = 1,155,035,974.98
  5. Step 5: Solve for x
    x = 1,155,035,974.98/39,236.90
  6. Step 6: Final answer
    x = 29,437.49

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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.