Home / 39,441.53-54,431.52-21,538.20

Finding the Fourth Proportional to 39,441.53, 54,431.52 and 21,538.20

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Solution

The fourth proportional to 39,441.53, 54,431.52 and 21,538.20 is: 29,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,441.53 : 54,431.52 = 21,538.20 : x
  2. Step 2: Convert to fraction form
    39,441.53/54,431.52 = 21,538.20/x
  3. Step 3: Cross multiply
    39,441.53x = 54,431.52 × 21,538.20
  4. Step 4: Simplify right side
    39,441.53x = 1,172,356,964.06
  5. Step 5: Solve for x
    x = 1,172,356,964.06/39,441.53
  6. Step 6: Final answer
    x = 29,723.92

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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.