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Finding the Fourth Proportional to 17,151.20, 23,686.80 and 13,176.80

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Solution

The fourth proportional to 17,151.20, 23,686.80 and 13,176.80 is: 18,197.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,151.20 : 23,686.80 = 13,176.80 : x
  2. Step 2: Convert to fraction form
    17,151.20/23,686.80 = 13,176.80/x
  3. Step 3: Cross multiply
    17,151.20x = 23,686.80 × 13,176.80
  4. Step 4: Simplify right side
    17,151.20x = 312,116,226.24
  5. Step 5: Solve for x
    x = 312,116,226.24/17,151.20
  6. Step 6: Final answer
    x = 18,197.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.