Home / 12,243.20-18,341.20-7,316.80

Finding the Fourth Proportional to 12,243.20, 18,341.20 and 7,316.80

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Solution

The fourth proportional to 12,243.20, 18,341.20 and 7,316.80 is: 10,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.20 : 18,341.20 = 7,316.80 : x
  2. Step 2: Convert to fraction form
    12,243.20/18,341.20 = 7,316.80/x
  3. Step 3: Cross multiply
    12,243.20x = 18,341.20 × 7,316.80
  4. Step 4: Simplify right side
    12,243.20x = 134,198,892.16
  5. Step 5: Solve for x
    x = 134,198,892.16/12,243.20
  6. Step 6: Final answer
    x = 10,961.10

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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.