Home / 20,061.97-27,685.18-11,109.28

Finding the Fourth Proportional to 20,061.97, 27,685.18 and 11,109.28

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Solution

The fourth proportional to 20,061.97, 27,685.18 and 11,109.28 is: 15,330.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.97 : 27,685.18 = 11,109.28 : x
  2. Step 2: Convert to fraction form
    20,061.97/27,685.18 = 11,109.28/x
  3. Step 3: Cross multiply
    20,061.97x = 27,685.18 × 11,109.28
  4. Step 4: Simplify right side
    20,061.97x = 307,562,360.92
  5. Step 5: Solve for x
    x = 307,562,360.92/20,061.97
  6. Step 6: Final answer
    x = 15,330.62

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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.