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Finding the Fourth Proportional to 17,971.80, 26,958.90 and 6,125.40

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Solution

The fourth proportional to 17,971.80, 26,958.90 and 6,125.40 is: 9,188.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,971.80 : 26,958.90 = 6,125.40 : x
  2. Step 2: Convert to fraction form
    17,971.80/26,958.90 = 6,125.40/x
  3. Step 3: Cross multiply
    17,971.80x = 26,958.90 × 6,125.40
  4. Step 4: Simplify right side
    17,971.80x = 165,134,046.06
  5. Step 5: Solve for x
    x = 165,134,046.06/17,971.80
  6. Step 6: Final answer
    x = 9,188.51

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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.