Home / 22,780.20-34,170.30-13,986.60

Finding the Fourth Proportional to 22,780.20, 34,170.30 and 13,986.60

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Solution

The fourth proportional to 22,780.20, 34,170.30 and 13,986.60 is: 20,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.20 : 34,170.30 = 13,986.60 : x
  2. Step 2: Convert to fraction form
    22,780.20/34,170.30 = 13,986.60/x
  3. Step 3: Cross multiply
    22,780.20x = 34,170.30 × 13,986.60
  4. Step 4: Simplify right side
    22,780.20x = 477,926,317.98
  5. Step 5: Solve for x
    x = 477,926,317.98/22,780.20
  6. Step 6: Final answer
    x = 20,979.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.