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Finding the Fourth Proportional to 17,102.60, 25,632.30 and 12,480.20

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Solution

The fourth proportional to 17,102.60, 25,632.30 and 12,480.20 is: 18,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,102.60 : 25,632.30 = 12,480.20 : x
  2. Step 2: Convert to fraction form
    17,102.60/25,632.30 = 12,480.20/x
  3. Step 3: Cross multiply
    17,102.60x = 25,632.30 × 12,480.20
  4. Step 4: Simplify right side
    17,102.60x = 319,896,230.46
  5. Step 5: Solve for x
    x = 319,896,230.46/17,102.60
  6. Step 6: Final answer
    x = 18,704.54

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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.