Home / 18,178.90-25,091.34-11,111.25

Finding the Fourth Proportional to 18,178.90, 25,091.34 and 11,111.25

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Solution

The fourth proportional to 18,178.90, 25,091.34 and 11,111.25 is: 15,336.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.90 : 25,091.34 = 11,111.25 : x
  2. Step 2: Convert to fraction form
    18,178.90/25,091.34 = 11,111.25/x
  3. Step 3: Cross multiply
    18,178.90x = 25,091.34 × 11,111.25
  4. Step 4: Simplify right side
    18,178.90x = 278,795,970.56
  5. Step 5: Solve for x
    x = 278,795,970.56/18,178.90
  6. Step 6: Final answer
    x = 15,336.24

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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.