Home / 13,209.27-18,229.02-7,240.56

Finding the Fourth Proportional to 13,209.27, 18,229.02 and 7,240.56

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Solution

The fourth proportional to 13,209.27, 18,229.02 and 7,240.56 is: 9,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.27 : 18,229.02 = 7,240.56 : x
  2. Step 2: Convert to fraction form
    13,209.27/18,229.02 = 7,240.56/x
  3. Step 3: Cross multiply
    13,209.27x = 18,229.02 × 7,240.56
  4. Step 4: Simplify right side
    13,209.27x = 131,988,313.05
  5. Step 5: Solve for x
    x = 131,988,313.05/13,209.27
  6. Step 6: Final answer
    x = 9,992.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.