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Finding the Fourth Proportional to 22,921, 34,387.28 and 6,505

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Solution

The fourth proportional to 22,921, 34,387.28 and 6,505 is: 9,759.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,921 : 34,387.28 = 6,505 : x
  2. Step 2: Convert to fraction form
    22,921/34,387.28 = 6,505/x
  3. Step 3: Cross multiply
    22,921x = 34,387.28 × 6,505
  4. Step 4: Simplify right side
    22,921x = 223,689,256.40
  5. Step 5: Solve for x
    x = 223,689,256.40/22,921
  6. Step 6: Final answer
    x = 9,759.14

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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.