Home / 18,718.80-25,833.88-11,455.12

Finding the Fourth Proportional to 18,718.80, 25,833.88 and 11,455.12

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Solution

The fourth proportional to 18,718.80, 25,833.88 and 11,455.12 is: 15,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.80 : 25,833.88 = 11,455.12 : x
  2. Step 2: Convert to fraction form
    18,718.80/25,833.88 = 11,455.12/x
  3. Step 3: Cross multiply
    18,718.80x = 25,833.88 × 11,455.12
  4. Step 4: Simplify right side
    18,718.80x = 295,930,195.47
  5. Step 5: Solve for x
    x = 295,930,195.47/18,718.80
  6. Step 6: Final answer
    x = 15,809.25

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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.