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Finding the Fourth Proportional to 20,363.07, 30,530.03 and 9,982.11

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Solution

The fourth proportional to 20,363.07, 30,530.03 and 9,982.11 is: 14,966.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.07 : 30,530.03 = 9,982.11 : x
  2. Step 2: Convert to fraction form
    20,363.07/30,530.03 = 9,982.11/x
  3. Step 3: Cross multiply
    20,363.07x = 30,530.03 × 9,982.11
  4. Step 4: Simplify right side
    20,363.07x = 304,754,117.76
  5. Step 5: Solve for x
    x = 304,754,117.76/20,363.07
  6. Step 6: Final answer
    x = 14,966.02

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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.