Home / 12,144.08-18,217.20-9,372.80

Finding the Fourth Proportional to 12,144.08, 18,217.20 and 9,372.80

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Solution

The fourth proportional to 12,144.08, 18,217.20 and 9,372.80 is: 14,060.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.08 : 18,217.20 = 9,372.80 : x
  2. Step 2: Convert to fraction form
    12,144.08/18,217.20 = 9,372.80/x
  3. Step 3: Cross multiply
    12,144.08x = 18,217.20 × 9,372.80
  4. Step 4: Simplify right side
    12,144.08x = 170,746,172.16
  5. Step 5: Solve for x
    x = 170,746,172.16/12,144.08
  6. Step 6: Final answer
    x = 14,060.03

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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.