Home / 39,680.62-54,760.46-21,776.78

Finding the Fourth Proportional to 39,680.62, 54,760.46 and 21,776.78

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Solution

The fourth proportional to 39,680.62, 54,760.46 and 21,776.78 is: 30,052.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.62 : 54,760.46 = 21,776.78 : x
  2. Step 2: Convert to fraction form
    39,680.62/54,760.46 = 21,776.78/x
  3. Step 3: Cross multiply
    39,680.62x = 54,760.46 × 21,776.78
  4. Step 4: Simplify right side
    39,680.62x = 1,192,506,490.12
  5. Step 5: Solve for x
    x = 1,192,506,490.12/39,680.62
  6. Step 6: Final answer
    x = 30,052.62

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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.