Home / 20,600.40-30,872.79-15,027.60

Finding the Fourth Proportional to 20,600.40, 30,872.79 and 15,027.60

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Solution

The fourth proportional to 20,600.40, 30,872.79 and 15,027.60 is: 22,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.40 : 30,872.79 = 15,027.60 : x
  2. Step 2: Convert to fraction form
    20,600.40/30,872.79 = 15,027.60/x
  3. Step 3: Cross multiply
    20,600.40x = 30,872.79 × 15,027.60
  4. Step 4: Simplify right side
    20,600.40x = 463,943,939.00
  5. Step 5: Solve for x
    x = 463,943,939.00/20,600.40
  6. Step 6: Final answer
    x = 22,521.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.