Home / 20,170.86-27,835.30-10,972.18

Finding the Fourth Proportional to 20,170.86, 27,835.30 and 10,972.18

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Solution

The fourth proportional to 20,170.86, 27,835.30 and 10,972.18 is: 15,141.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.86 : 27,835.30 = 10,972.18 : x
  2. Step 2: Convert to fraction form
    20,170.86/27,835.30 = 10,972.18/x
  3. Step 3: Cross multiply
    20,170.86x = 27,835.30 × 10,972.18
  4. Step 4: Simplify right side
    20,170.86x = 305,413,921.95
  5. Step 5: Solve for x
    x = 305,413,921.95/20,170.86
  6. Step 6: Final answer
    x = 15,141.34

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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.