Home / 20,104.19-27,743.68-11,151.60

Finding the Fourth Proportional to 20,104.19, 27,743.68 and 11,151.60

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Solution

The fourth proportional to 20,104.19, 27,743.68 and 11,151.60 is: 15,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.19 : 27,743.68 = 11,151.60 : x
  2. Step 2: Convert to fraction form
    20,104.19/27,743.68 = 11,151.60/x
  3. Step 3: Cross multiply
    20,104.19x = 27,743.68 × 11,151.60
  4. Step 4: Simplify right side
    20,104.19x = 309,386,421.89
  5. Step 5: Solve for x
    x = 309,386,421.89/20,104.19
  6. Step 6: Final answer
    x = 15,389.15

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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.