Home / 10,621.25-15,933.80-4,377.79

Finding the Fourth Proportional to 10,621.25, 15,933.80 and 4,377.79

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Solution

The fourth proportional to 10,621.25, 15,933.80 and 4,377.79 is: 6,567.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.25 : 15,933.80 = 4,377.79 : x
  2. Step 2: Convert to fraction form
    10,621.25/15,933.80 = 4,377.79/x
  3. Step 3: Cross multiply
    10,621.25x = 15,933.80 × 4,377.79
  4. Step 4: Simplify right side
    10,621.25x = 69,754,830.30
  5. Step 5: Solve for x
    x = 69,754,830.30/10,621.25
  6. Step 6: Final answer
    x = 6,567.48

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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.