Home / 13,661.52-18,813.24-11,868.20

Finding the Fourth Proportional to 13,661.52, 18,813.24 and 11,868.20

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Solution

The fourth proportional to 13,661.52, 18,813.24 and 11,868.20 is: 16,343.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.52 : 18,813.24 = 11,868.20 : x
  2. Step 2: Convert to fraction form
    13,661.52/18,813.24 = 11,868.20/x
  3. Step 3: Cross multiply
    13,661.52x = 18,813.24 × 11,868.20
  4. Step 4: Simplify right side
    13,661.52x = 223,279,294.97
  5. Step 5: Solve for x
    x = 223,279,294.97/13,661.52
  6. Step 6: Final answer
    x = 16,343.66

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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.