Home / 12,581.75-18,877.79-6,657.11

Finding the Fourth Proportional to 12,581.75, 18,877.79 and 6,657.11

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Solution

The fourth proportional to 12,581.75, 18,877.79 and 6,657.11 is: 9,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.75 : 18,877.79 = 6,657.11 : x
  2. Step 2: Convert to fraction form
    12,581.75/18,877.79 = 6,657.11/x
  3. Step 3: Cross multiply
    12,581.75x = 18,877.79 × 6,657.11
  4. Step 4: Simplify right side
    12,581.75x = 125,671,396.91
  5. Step 5: Solve for x
    x = 125,671,396.91/12,581.75
  6. Step 6: Final answer
    x = 9,988.39

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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.