Home / 20,158.47-27,817.74-11,205.90

Finding the Fourth Proportional to 20,158.47, 27,817.74 and 11,205.90

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Solution

The fourth proportional to 20,158.47, 27,817.74 and 11,205.90 is: 15,463.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.47 : 27,817.74 = 11,205.90 : x
  2. Step 2: Convert to fraction form
    20,158.47/27,817.74 = 11,205.90/x
  3. Step 3: Cross multiply
    20,158.47x = 27,817.74 × 11,205.90
  4. Step 4: Simplify right side
    20,158.47x = 311,722,812.67
  5. Step 5: Solve for x
    x = 311,722,812.67/20,158.47
  6. Step 6: Final answer
    x = 15,463.61

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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.