Home / 20,113.17-27,759.48-11,163.55

Finding the Fourth Proportional to 20,113.17, 27,759.48 and 11,163.55

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Solution

The fourth proportional to 20,113.17, 27,759.48 and 11,163.55 is: 15,407.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,113.17 : 27,759.48 = 11,163.55 : x
  2. Step 2: Convert to fraction form
    20,113.17/27,759.48 = 11,163.55/x
  3. Step 3: Cross multiply
    20,113.17x = 27,759.48 × 11,163.55
  4. Step 4: Simplify right side
    20,113.17x = 309,894,342.95
  5. Step 5: Solve for x
    x = 309,894,342.95/20,113.17
  6. Step 6: Final answer
    x = 15,407.53

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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.