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Finding the Fourth Proportional to 20,482.92, 30,675.14 and 11,691.18

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Solution

The fourth proportional to 20,482.92, 30,675.14 and 11,691.18 is: 17,508.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.92 : 30,675.14 = 11,691.18 : x
  2. Step 2: Convert to fraction form
    20,482.92/30,675.14 = 11,691.18/x
  3. Step 3: Cross multiply
    20,482.92x = 30,675.14 × 11,691.18
  4. Step 4: Simplify right side
    20,482.92x = 358,628,583.27
  5. Step 5: Solve for x
    x = 358,628,583.27/20,482.92
  6. Step 6: Final answer
    x = 17,508.66

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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.