Home / 39,321.38-54,264.12-21,416.37

Finding the Fourth Proportional to 39,321.38, 54,264.12 and 21,416.37

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Solution

The fourth proportional to 39,321.38, 54,264.12 and 21,416.37 is: 29,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,321.38 : 54,264.12 = 21,416.37 : x
  2. Step 2: Convert to fraction form
    39,321.38/54,264.12 = 21,416.37/x
  3. Step 3: Cross multiply
    39,321.38x = 54,264.12 × 21,416.37
  4. Step 4: Simplify right side
    39,321.38x = 1,162,140,471.64
  5. Step 5: Solve for x
    x = 1,162,140,471.64/39,321.38
  6. Step 6: Final answer
    x = 29,554.93

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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.