Home / 39,358.80-54,314.28-21,453.12

Finding the Fourth Proportional to 39,358.80, 54,314.28 and 21,453.12

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Solution

The fourth proportional to 39,358.80, 54,314.28 and 21,453.12 is: 29,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,358.80 : 54,314.28 = 21,453.12 : x
  2. Step 2: Convert to fraction form
    39,358.80/54,314.28 = 21,453.12/x
  3. Step 3: Cross multiply
    39,358.80x = 54,314.28 × 21,453.12
  4. Step 4: Simplify right side
    39,358.80x = 1,165,210,766.55
  5. Step 5: Solve for x
    x = 1,165,210,766.55/39,358.80
  6. Step 6: Final answer
    x = 29,604.83

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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.