Home / 28,579.70-42,851.30-11,951.20

Finding the Fourth Proportional to 28,579.70, 42,851.30 and 11,951.20

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Solution

The fourth proportional to 28,579.70, 42,851.30 and 11,951.20 is: 17,919.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.70 : 42,851.30 = 11,951.20 : x
  2. Step 2: Convert to fraction form
    28,579.70/42,851.30 = 11,951.20/x
  3. Step 3: Cross multiply
    28,579.70x = 42,851.30 × 11,951.20
  4. Step 4: Simplify right side
    28,579.70x = 512,124,456.56
  5. Step 5: Solve for x
    x = 512,124,456.56/28,579.70
  6. Step 6: Final answer
    x = 17,919.17

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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.