Home / 39,679.95-54,759.00-21,776.62

Finding the Fourth Proportional to 39,679.95, 54,759.00 and 21,776.62

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Solution

The fourth proportional to 39,679.95, 54,759.00 and 21,776.62 is: 30,052.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,679.95 : 54,759.00 = 21,776.62 : x
  2. Step 2: Convert to fraction form
    39,679.95/54,759.00 = 21,776.62/x
  3. Step 3: Cross multiply
    39,679.95x = 54,759.00 × 21,776.62
  4. Step 4: Simplify right side
    39,679.95x = 1,192,465,743.24
  5. Step 5: Solve for x
    x = 1,192,465,743.24/39,679.95
  6. Step 6: Final answer
    x = 30,052.10

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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.