Home / 18,979.90-28,469.89-5,832.18

Finding the Fourth Proportional to 18,979.90, 28,469.89 and 5,832.18

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Solution

The fourth proportional to 18,979.90, 28,469.89 and 5,832.18 is: 8,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.90 : 28,469.89 = 5,832.18 : x
  2. Step 2: Convert to fraction form
    18,979.90/28,469.89 = 5,832.18/x
  3. Step 3: Cross multiply
    18,979.90x = 28,469.89 × 5,832.18
  4. Step 4: Simplify right side
    18,979.90x = 166,041,523.06
  5. Step 5: Solve for x
    x = 166,041,523.06/18,979.90
  6. Step 6: Final answer
    x = 8,748.28

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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.