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Finding the Fourth Proportional to 12,436.61, 18,663.11 and 5,863.46

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Solution

The fourth proportional to 12,436.61, 18,663.11 and 5,863.46 is: 8,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.61 : 18,663.11 = 5,863.46 : x
  2. Step 2: Convert to fraction form
    12,436.61/18,663.11 = 5,863.46/x
  3. Step 3: Cross multiply
    12,436.61x = 18,663.11 × 5,863.46
  4. Step 4: Simplify right side
    12,436.61x = 109,430,298.32
  5. Step 5: Solve for x
    x = 109,430,298.32/12,436.61
  6. Step 6: Final answer
    x = 8,799.05

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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.