Home / 28,317.38-42,476.20-7,540.88

Finding the Fourth Proportional to 28,317.38, 42,476.20 and 7,540.88

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Solution

The fourth proportional to 28,317.38, 42,476.20 and 7,540.88 is: 11,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.38 : 42,476.20 = 7,540.88 : x
  2. Step 2: Convert to fraction form
    28,317.38/42,476.20 = 7,540.88/x
  3. Step 3: Cross multiply
    28,317.38x = 42,476.20 × 7,540.88
  4. Step 4: Simplify right side
    28,317.38x = 320,307,695.82
  5. Step 5: Solve for x
    x = 320,307,695.82/28,317.38
  6. Step 6: Final answer
    x = 11,311.35

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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.