Home / 39,439.14-54,424.83-21,534.30

Finding the Fourth Proportional to 39,439.14, 54,424.83 and 21,534.30

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Solution

The fourth proportional to 39,439.14, 54,424.83 and 21,534.30 is: 29,716.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,439.14 : 54,424.83 = 21,534.30 : x
  2. Step 2: Convert to fraction form
    39,439.14/54,424.83 = 21,534.30/x
  3. Step 3: Cross multiply
    39,439.14x = 54,424.83 × 21,534.30
  4. Step 4: Simplify right side
    39,439.14x = 1,172,000,616.67
  5. Step 5: Solve for x
    x = 1,172,000,616.67/39,439.14
  6. Step 6: Final answer
    x = 29,716.69

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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.