Home / 13,149.68-18,114.75-11,255.18

Finding the Fourth Proportional to 13,149.68, 18,114.75 and 11,255.18

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Solution

The fourth proportional to 13,149.68, 18,114.75 and 11,255.18 is: 15,504.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.68 : 18,114.75 = 11,255.18 : x
  2. Step 2: Convert to fraction form
    13,149.68/18,114.75 = 11,255.18/x
  3. Step 3: Cross multiply
    13,149.68x = 18,114.75 × 11,255.18
  4. Step 4: Simplify right side
    13,149.68x = 203,884,681.33
  5. Step 5: Solve for x
    x = 203,884,681.33/13,149.68
  6. Step 6: Final answer
    x = 15,504.92

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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.