Home / 19,135.20-28,691.06-7,434.76

Finding the Fourth Proportional to 19,135.20, 28,691.06 and 7,434.76

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Solution

The fourth proportional to 19,135.20, 28,691.06 and 7,434.76 is: 11,147.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.20 : 28,691.06 = 7,434.76 : x
  2. Step 2: Convert to fraction form
    19,135.20/28,691.06 = 7,434.76/x
  3. Step 3: Cross multiply
    19,135.20x = 28,691.06 × 7,434.76
  4. Step 4: Simplify right side
    19,135.20x = 213,311,145.25
  5. Step 5: Solve for x
    x = 213,311,145.25/19,135.20
  6. Step 6: Final answer
    x = 11,147.58

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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.