Home / 10,621.49-15,934.14-4,378.03

Finding the Fourth Proportional to 10,621.49, 15,934.14 and 4,378.03

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Solution

The fourth proportional to 10,621.49, 15,934.14 and 4,378.03 is: 6,567.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.49 : 15,934.14 = 4,378.03 : x
  2. Step 2: Convert to fraction form
    10,621.49/15,934.14 = 4,378.03/x
  3. Step 3: Cross multiply
    10,621.49x = 15,934.14 × 4,378.03
  4. Step 4: Simplify right side
    10,621.49x = 69,760,063.27
  5. Step 5: Solve for x
    x = 69,760,063.27/10,621.49
  6. Step 6: Final answer
    x = 6,567.83

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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.