Home / 20,061.47-27,684.49-11,108.78

Finding the Fourth Proportional to 20,061.47, 27,684.49 and 11,108.78

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Solution

The fourth proportional to 20,061.47, 27,684.49 and 11,108.78 is: 15,329.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.47 : 27,684.49 = 11,108.78 : x
  2. Step 2: Convert to fraction form
    20,061.47/27,684.49 = 11,108.78/x
  3. Step 3: Cross multiply
    20,061.47x = 27,684.49 × 11,108.78
  4. Step 4: Simplify right side
    20,061.47x = 307,540,832.56
  5. Step 5: Solve for x
    x = 307,540,832.56/20,061.47
  6. Step 6: Final answer
    x = 15,329.93

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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.