Home / 12,143.04-18,214.56-8,687.04

Finding the Fourth Proportional to 12,143.04, 18,214.56 and 8,687.04

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Solution

The fourth proportional to 12,143.04, 18,214.56 and 8,687.04 is: 13,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.04 : 18,214.56 = 8,687.04 : x
  2. Step 2: Convert to fraction form
    12,143.04/18,214.56 = 8,687.04/x
  3. Step 3: Cross multiply
    12,143.04x = 18,214.56 × 8,687.04
  4. Step 4: Simplify right side
    12,143.04x = 158,230,611.30
  5. Step 5: Solve for x
    x = 158,230,611.30/12,143.04
  6. Step 6: Final answer
    x = 13,030.56

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Similar ratio
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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.