Home / 20,101.52-27,741.74-11,151.90

Finding the Fourth Proportional to 20,101.52, 27,741.74 and 11,151.90

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Solution

The fourth proportional to 20,101.52, 27,741.74 and 11,151.90 is: 15,390.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.52 : 27,741.74 = 11,151.90 : x
  2. Step 2: Convert to fraction form
    20,101.52/27,741.74 = 11,151.90/x
  3. Step 3: Cross multiply
    20,101.52x = 27,741.74 × 11,151.90
  4. Step 4: Simplify right side
    20,101.52x = 309,373,110.31
  5. Step 5: Solve for x
    x = 309,373,110.31/20,101.52
  6. Step 6: Final answer
    x = 15,390.53

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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.