Home / 20,104.40-27,742.08-11,151.72

Finding the Fourth Proportional to 20,104.40, 27,742.08 and 11,151.72

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Solution

The fourth proportional to 20,104.40, 27,742.08 and 11,151.72 is: 15,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.40 : 27,742.08 = 11,151.72 : x
  2. Step 2: Convert to fraction form
    20,104.40/27,742.08 = 11,151.72/x
  3. Step 3: Cross multiply
    20,104.40x = 27,742.08 × 11,151.72
  4. Step 4: Simplify right side
    20,104.40x = 309,371,908.38
  5. Step 5: Solve for x
    x = 309,371,908.38/20,104.40
  6. Step 6: Final answer
    x = 15,388.27

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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.