Home / 39,235.47-54,146.01-21,331.68

Finding the Fourth Proportional to 39,235.47, 54,146.01 and 21,331.68

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Solution

The fourth proportional to 39,235.47, 54,146.01 and 21,331.68 is: 29,438.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.47 : 54,146.01 = 21,331.68 : x
  2. Step 2: Convert to fraction form
    39,235.47/54,146.01 = 21,331.68/x
  3. Step 3: Cross multiply
    39,235.47x = 54,146.01 × 21,331.68
  4. Step 4: Simplify right side
    39,235.47x = 1,155,025,087.87
  5. Step 5: Solve for x
    x = 1,155,025,087.87/39,235.47
  6. Step 6: Final answer
    x = 29,438.29

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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.