Home / 17,990.28-26,977.50-8,129.16

Finding the Fourth Proportional to 17,990.28, 26,977.50 and 8,129.16

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Solution

The fourth proportional to 17,990.28, 26,977.50 and 8,129.16 is: 12,190.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.28 : 26,977.50 = 8,129.16 : x
  2. Step 2: Convert to fraction form
    17,990.28/26,977.50 = 8,129.16/x
  3. Step 3: Cross multiply
    17,990.28x = 26,977.50 × 8,129.16
  4. Step 4: Simplify right side
    17,990.28x = 219,304,413.90
  5. Step 5: Solve for x
    x = 219,304,413.90/17,990.28
  6. Step 6: Final answer
    x = 12,190.16

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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.