Home / 15,120.30-22,680.45-12,350.10

Finding the Fourth Proportional to 15,120.30, 22,680.45 and 12,350.10

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Solution

The fourth proportional to 15,120.30, 22,680.45 and 12,350.10 is: 18,525.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.30 : 22,680.45 = 12,350.10 : x
  2. Step 2: Convert to fraction form
    15,120.30/22,680.45 = 12,350.10/x
  3. Step 3: Cross multiply
    15,120.30x = 22,680.45 × 12,350.10
  4. Step 4: Simplify right side
    15,120.30x = 280,105,825.55
  5. Step 5: Solve for x
    x = 280,105,825.55/15,120.30
  6. Step 6: Final answer
    x = 18,525.15

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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.