Home / 18,982.13-28,473.20-5,131.13

Finding the Fourth Proportional to 18,982.13, 28,473.20 and 5,131.13

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Solution

The fourth proportional to 18,982.13, 28,473.20 and 5,131.13 is: 7,696.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.13 : 28,473.20 = 5,131.13 : x
  2. Step 2: Convert to fraction form
    18,982.13/28,473.20 = 5,131.13/x
  3. Step 3: Cross multiply
    18,982.13x = 28,473.20 × 5,131.13
  4. Step 4: Simplify right side
    18,982.13x = 146,099,522.69
  5. Step 5: Solve for x
    x = 146,099,522.69/18,982.13
  6. Step 6: Final answer
    x = 7,696.69

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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.