Home / 28,286.20-42,423.90-7,511.32

Finding the Fourth Proportional to 28,286.20, 42,423.90 and 7,511.32

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Solution

The fourth proportional to 28,286.20, 42,423.90 and 7,511.32 is: 11,265.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,286.20 : 42,423.90 = 7,511.32 : x
  2. Step 2: Convert to fraction form
    28,286.20/42,423.90 = 7,511.32/x
  3. Step 3: Cross multiply
    28,286.20x = 42,423.90 × 7,511.32
  4. Step 4: Simplify right side
    28,286.20x = 318,659,488.55
  5. Step 5: Solve for x
    x = 318,659,488.55/28,286.20
  6. Step 6: Final answer
    x = 11,265.55

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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.