Home / 18,786.08-25,920.34-11,125.49

Finding the Fourth Proportional to 18,786.08, 25,920.34 and 11,125.49

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Solution

The fourth proportional to 18,786.08, 25,920.34 and 11,125.49 is: 15,350.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.08 : 25,920.34 = 11,125.49 : x
  2. Step 2: Convert to fraction form
    18,786.08/25,920.34 = 11,125.49/x
  3. Step 3: Cross multiply
    18,786.08x = 25,920.34 × 11,125.49
  4. Step 4: Simplify right side
    18,786.08x = 288,376,298.24
  5. Step 5: Solve for x
    x = 288,376,298.24/18,786.08
  6. Step 6: Final answer
    x = 15,350.53

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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.