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Finding the Fourth Proportional to 10,686.24, 14,747.76 and 6,960.24

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Solution

The fourth proportional to 10,686.24, 14,747.76 and 6,960.24 is: 9,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.24 : 14,747.76 = 6,960.24 : x
  2. Step 2: Convert to fraction form
    10,686.24/14,747.76 = 6,960.24/x
  3. Step 3: Cross multiply
    10,686.24x = 14,747.76 × 6,960.24
  4. Step 4: Simplify right side
    10,686.24x = 102,647,949.06
  5. Step 5: Solve for x
    x = 102,647,949.06/10,686.24
  6. Step 6: Final answer
    x = 9,605.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.