Home / 34,579.38-47,720.49-21,150.39

Finding the Fourth Proportional to 34,579.38, 47,720.49 and 21,150.39

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Solution

The fourth proportional to 34,579.38, 47,720.49 and 21,150.39 is: 29,188.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,579.38 : 47,720.49 = 21,150.39 : x
  2. Step 2: Convert to fraction form
    34,579.38/47,720.49 = 21,150.39/x
  3. Step 3: Cross multiply
    34,579.38x = 47,720.49 × 21,150.39
  4. Step 4: Simplify right side
    34,579.38x = 1,009,306,974.49
  5. Step 5: Solve for x
    x = 1,009,306,974.49/34,579.38
  6. Step 6: Final answer
    x = 29,188.12

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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.