Home / 20,101.19-27,740.28-11,149.52

Finding the Fourth Proportional to 20,101.19, 27,740.28 and 11,149.52

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Solution

The fourth proportional to 20,101.19, 27,740.28 and 11,149.52 is: 15,386.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.19 : 27,740.28 = 11,149.52 : x
  2. Step 2: Convert to fraction form
    20,101.19/27,740.28 = 11,149.52/x
  3. Step 3: Cross multiply
    20,101.19x = 27,740.28 × 11,149.52
  4. Step 4: Simplify right side
    20,101.19x = 309,290,806.67
  5. Step 5: Solve for x
    x = 309,290,806.67/20,101.19
  6. Step 6: Final answer
    x = 15,386.69

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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.