Home / 17,990.40-26,984.32-6,143.20

Finding the Fourth Proportional to 17,990.40, 26,984.32 and 6,143.20

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Solution

The fourth proportional to 17,990.40, 26,984.32 and 6,143.20 is: 9,214.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.40 : 26,984.32 = 6,143.20 : x
  2. Step 2: Convert to fraction form
    17,990.40/26,984.32 = 6,143.20/x
  3. Step 3: Cross multiply
    17,990.40x = 26,984.32 × 6,143.20
  4. Step 4: Simplify right side
    17,990.40x = 165,770,074.62
  5. Step 5: Solve for x
    x = 165,770,074.62/17,990.40
  6. Step 6: Final answer
    x = 9,214.36

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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.