Home / 18,675.24-25,766.33-11,117.78

Finding the Fourth Proportional to 18,675.24, 25,766.33 and 11,117.78

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Solution

The fourth proportional to 18,675.24, 25,766.33 and 11,117.78 is: 15,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.24 : 25,766.33 = 11,117.78 : x
  2. Step 2: Convert to fraction form
    18,675.24/25,766.33 = 11,117.78/x
  3. Step 3: Cross multiply
    18,675.24x = 25,766.33 × 11,117.78
  4. Step 4: Simplify right side
    18,675.24x = 286,464,388.35
  5. Step 5: Solve for x
    x = 286,464,388.35/18,675.24
  6. Step 6: Final answer
    x = 15,339.27

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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.