Home / 18,979.44-26,148.90-13,231.50

Finding the Fourth Proportional to 18,979.44, 26,148.90 and 13,231.50

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Solution

The fourth proportional to 18,979.44, 26,148.90 and 13,231.50 is: 18,229.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.44 : 26,148.90 = 13,231.50 : x
  2. Step 2: Convert to fraction form
    18,979.44/26,148.90 = 13,231.50/x
  3. Step 3: Cross multiply
    18,979.44x = 26,148.90 × 13,231.50
  4. Step 4: Simplify right side
    18,979.44x = 345,989,170.35
  5. Step 5: Solve for x
    x = 345,989,170.35/18,979.44
  6. Step 6: Final answer
    x = 18,229.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.