Home / 39,236.85-54,146.75-21,331.74

Finding the Fourth Proportional to 39,236.85, 54,146.75 and 21,331.74

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Solution

The fourth proportional to 39,236.85, 54,146.75 and 21,331.74 is: 29,437.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,236.85 : 54,146.75 = 21,331.74 : x
  2. Step 2: Convert to fraction form
    39,236.85/54,146.75 = 21,331.74/x
  3. Step 3: Cross multiply
    39,236.85x = 54,146.75 × 21,331.74
  4. Step 4: Simplify right side
    39,236.85x = 1,155,044,286.19
  5. Step 5: Solve for x
    x = 1,155,044,286.19/39,236.85
  6. Step 6: Final answer
    x = 29,437.74

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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.