Home / 27,136.80-40,705.20-18,279.45

Finding the Fourth Proportional to 27,136.80, 40,705.20 and 18,279.45

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Solution

The fourth proportional to 27,136.80, 40,705.20 and 18,279.45 is: 27,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,136.80 : 40,705.20 = 18,279.45 : x
  2. Step 2: Convert to fraction form
    27,136.80/40,705.20 = 18,279.45/x
  3. Step 3: Cross multiply
    27,136.80x = 40,705.20 × 18,279.45
  4. Step 4: Simplify right side
    27,136.80x = 744,068,668.14
  5. Step 5: Solve for x
    x = 744,068,668.14/27,136.80
  6. Step 6: Final answer
    x = 27,419.18

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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.