Home / 10,619.20-15,928.80-3,223.30

Finding the Fourth Proportional to 10,619.20, 15,928.80 and 3,223.30

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Solution

The fourth proportional to 10,619.20, 15,928.80 and 3,223.30 is: 4,834.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,619.20 : 15,928.80 = 3,223.30 : x
  2. Step 2: Convert to fraction form
    10,619.20/15,928.80 = 3,223.30/x
  3. Step 3: Cross multiply
    10,619.20x = 15,928.80 × 3,223.30
  4. Step 4: Simplify right side
    10,619.20x = 51,343,301.04
  5. Step 5: Solve for x
    x = 51,343,301.04/10,619.20
  6. Step 6: Final answer
    x = 4,834.95

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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.