Home / 18,988.19-28,481.92-5,670.21

Finding the Fourth Proportional to 18,988.19, 28,481.92 and 5,670.21

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Solution

The fourth proportional to 18,988.19, 28,481.92 and 5,670.21 is: 8,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.19 : 28,481.92 = 5,670.21 : x
  2. Step 2: Convert to fraction form
    18,988.19/28,481.92 = 5,670.21/x
  3. Step 3: Cross multiply
    18,988.19x = 28,481.92 × 5,670.21
  4. Step 4: Simplify right side
    18,988.19x = 161,498,352.00
  5. Step 5: Solve for x
    x = 161,498,352.00/18,988.19
  6. Step 6: Final answer
    x = 8,505.20

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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.