Home / 39,235.28-54,145.15-21,329.90

Finding the Fourth Proportional to 39,235.28, 54,145.15 and 21,329.90

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Solution

The fourth proportional to 39,235.28, 54,145.15 and 21,329.90 is: 29,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,235.28 : 54,145.15 = 21,329.90 : x
  2. Step 2: Convert to fraction form
    39,235.28/54,145.15 = 21,329.90/x
  3. Step 3: Cross multiply
    39,235.28x = 54,145.15 × 21,329.90
  4. Step 4: Simplify right side
    39,235.28x = 1,154,910,310.93
  5. Step 5: Solve for x
    x = 1,154,910,310.93/39,235.28
  6. Step 6: Final answer
    x = 29,435.50

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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.