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Finding the Fourth Proportional to 15,197.80, 22,758.30 and 12,125.80

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Solution

The fourth proportional to 15,197.80, 22,758.30 and 12,125.80 is: 18,158.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.80 : 22,758.30 = 12,125.80 : x
  2. Step 2: Convert to fraction form
    15,197.80/22,758.30 = 12,125.80/x
  3. Step 3: Cross multiply
    15,197.80x = 22,758.30 × 12,125.80
  4. Step 4: Simplify right side
    15,197.80x = 275,962,594.14
  5. Step 5: Solve for x
    x = 275,962,594.14/15,197.80
  6. Step 6: Final answer
    x = 18,158.06

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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.