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Finding the Fourth Proportional to 12,572.32, 18,858.80 and 8,676

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Solution

The fourth proportional to 12,572.32, 18,858.80 and 8,676 is: 13,014.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.32 : 18,858.80 = 8,676 : x
  2. Step 2: Convert to fraction form
    12,572.32/18,858.80 = 8,676/x
  3. Step 3: Cross multiply
    12,572.32x = 18,858.80 × 8,676
  4. Step 4: Simplify right side
    12,572.32x = 163,618,948.80
  5. Step 5: Solve for x
    x = 163,618,948.80/12,572.32
  6. Step 6: Final answer
    x = 13,014.22

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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.