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Finding the Fourth Proportional to 10,656, 15,990.48 and 4,500

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Solution

The fourth proportional to 10,656, 15,990.48 and 4,500 is: 6,752.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656 : 15,990.48 = 4,500 : x
  2. Step 2: Convert to fraction form
    10,656/15,990.48 = 4,500/x
  3. Step 3: Cross multiply
    10,656x = 15,990.48 × 4,500
  4. Step 4: Simplify right side
    10,656x = 71,957,160
  5. Step 5: Solve for x
    x = 71,957,160/10,656
  6. Step 6: Final answer
    x = 6,752.74

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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.