Home / 28,279.10-42,419.25-8,557.62

Finding the Fourth Proportional to 28,279.10, 42,419.25 and 8,557.62

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Solution

The fourth proportional to 28,279.10, 42,419.25 and 8,557.62 is: 12,836.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.10 : 42,419.25 = 8,557.62 : x
  2. Step 2: Convert to fraction form
    28,279.10/42,419.25 = 8,557.62/x
  3. Step 3: Cross multiply
    28,279.10x = 42,419.25 × 8,557.62
  4. Step 4: Simplify right side
    28,279.10x = 363,007,822.19
  5. Step 5: Solve for x
    x = 363,007,822.19/28,279.10
  6. Step 6: Final answer
    x = 12,836.61

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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.