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Finding the Fourth Proportional to 12,663.29, 18,993.16 and 4,343.17

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Solution

The fourth proportional to 12,663.29, 18,993.16 and 4,343.17 is: 6,514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.29 : 18,993.16 = 4,343.17 : x
  2. Step 2: Convert to fraction form
    12,663.29/18,993.16 = 4,343.17/x
  3. Step 3: Cross multiply
    12,663.29x = 18,993.16 × 4,343.17
  4. Step 4: Simplify right side
    12,663.29x = 82,490,522.72
  5. Step 5: Solve for x
    x = 82,490,522.72/12,663.29
  6. Step 6: Final answer
    x = 6,514.15

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1.5x scale

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.