Home / 28,474.20-42,711.30-13,679.55

Finding the Fourth Proportional to 28,474.20, 42,711.30 and 13,679.55

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Solution

The fourth proportional to 28,474.20, 42,711.30 and 13,679.55 is: 20,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,474.20 : 42,711.30 = 13,679.55 : x
  2. Step 2: Convert to fraction form
    28,474.20/42,711.30 = 13,679.55/x
  3. Step 3: Cross multiply
    28,474.20x = 42,711.30 × 13,679.55
  4. Step 4: Simplify right side
    28,474.20x = 584,271,363.92
  5. Step 5: Solve for x
    x = 584,271,363.92/28,474.20
  6. Step 6: Final answer
    x = 20,519.33

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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.