Home / 10,243.20-15,359.76-3,316.80

Finding the Fourth Proportional to 10,243.20, 15,359.76 and 3,316.80

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Solution

The fourth proportional to 10,243.20, 15,359.76 and 3,316.80 is: 4,973.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,243.20 : 15,359.76 = 3,316.80 : x
  2. Step 2: Convert to fraction form
    10,243.20/15,359.76 = 3,316.80/x
  3. Step 3: Cross multiply
    10,243.20x = 15,359.76 × 3,316.80
  4. Step 4: Simplify right side
    10,243.20x = 50,945,251.97
  5. Step 5: Solve for x
    x = 50,945,251.97/10,243.20
  6. Step 6: Final answer
    x = 4,973.57

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1.5x scale

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.