Home / 28,146.12-42,219.18-10,611.86

Finding the Fourth Proportional to 28,146.12, 42,219.18 and 10,611.86

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Solution

The fourth proportional to 28,146.12, 42,219.18 and 10,611.86 is: 15,917.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.12 : 42,219.18 = 10,611.86 : x
  2. Step 2: Convert to fraction form
    28,146.12/42,219.18 = 10,611.86/x
  3. Step 3: Cross multiply
    28,146.12x = 42,219.18 × 10,611.86
  4. Step 4: Simplify right side
    28,146.12x = 448,023,816.38
  5. Step 5: Solve for x
    x = 448,023,816.38/28,146.12
  6. Step 6: Final answer
    x = 15,917.78

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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.