Home / 28,447.20-42,670.80-13,652.55

Finding the Fourth Proportional to 28,447.20, 42,670.80 and 13,652.55

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Solution

The fourth proportional to 28,447.20, 42,670.80 and 13,652.55 is: 20,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.20 : 42,670.80 = 13,652.55 : x
  2. Step 2: Convert to fraction form
    28,447.20/42,670.80 = 13,652.55/x
  3. Step 3: Cross multiply
    28,447.20x = 42,670.80 × 13,652.55
  4. Step 4: Simplify right side
    28,447.20x = 582,565,230.54
  5. Step 5: Solve for x
    x = 582,565,230.54/28,447.20
  6. Step 6: Final answer
    x = 20,478.83

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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.