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Finding the Fourth Proportional to 17,101.80, 25,659.90 and 9,316.20

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Solution

The fourth proportional to 17,101.80, 25,659.90 and 9,316.20 is: 13,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,101.80 : 25,659.90 = 9,316.20 : x
  2. Step 2: Convert to fraction form
    17,101.80/25,659.90 = 9,316.20/x
  3. Step 3: Cross multiply
    17,101.80x = 25,659.90 × 9,316.20
  4. Step 4: Simplify right side
    17,101.80x = 239,052,760.38
  5. Step 5: Solve for x
    x = 239,052,760.38/17,101.80
  6. Step 6: Final answer
    x = 13,978.22

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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.