Home / 13,663.17-18,857.28-8,286.48

Finding the Fourth Proportional to 13,663.17, 18,857.28 and 8,286.48

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Solution

The fourth proportional to 13,663.17, 18,857.28 and 8,286.48 is: 11,436.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.17 : 18,857.28 = 8,286.48 : x
  2. Step 2: Convert to fraction form
    13,663.17/18,857.28 = 8,286.48/x
  3. Step 3: Cross multiply
    13,663.17x = 18,857.28 × 8,286.48
  4. Step 4: Simplify right side
    13,663.17x = 156,260,473.57
  5. Step 5: Solve for x
    x = 156,260,473.57/13,663.17
  6. Step 6: Final answer
    x = 11,436.62

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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.