Home / 10,620.78-15,933.10-4,377.34

Finding the Fourth Proportional to 10,620.78, 15,933.10 and 4,377.34

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Solution

The fourth proportional to 10,620.78, 15,933.10 and 4,377.34 is: 6,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.78 : 15,933.10 = 4,377.34 : x
  2. Step 2: Convert to fraction form
    10,620.78/15,933.10 = 4,377.34/x
  3. Step 3: Cross multiply
    10,620.78x = 15,933.10 × 4,377.34
  4. Step 4: Simplify right side
    10,620.78x = 69,744,595.95
  5. Step 5: Solve for x
    x = 69,744,595.95/10,620.78
  6. Step 6: Final answer
    x = 6,566.81

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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.