Home / 18,764.79-25,891.14-11,209.92

Finding the Fourth Proportional to 18,764.79, 25,891.14 and 11,209.92

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Solution

The fourth proportional to 18,764.79, 25,891.14 and 11,209.92 is: 15,467.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.79 : 25,891.14 = 11,209.92 : x
  2. Step 2: Convert to fraction form
    18,764.79/25,891.14 = 11,209.92/x
  3. Step 3: Cross multiply
    18,764.79x = 25,891.14 × 11,209.92
  4. Step 4: Simplify right side
    18,764.79x = 290,237,608.11
  5. Step 5: Solve for x
    x = 290,237,608.11/18,764.79
  6. Step 6: Final answer
    x = 15,467.14

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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.