Home / 18,203.30-25,125.32-11,135.66

Finding the Fourth Proportional to 18,203.30, 25,125.32 and 11,135.66

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Solution

The fourth proportional to 18,203.30, 25,125.32 and 11,135.66 is: 15,370.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.30 : 25,125.32 = 11,135.66 : x
  2. Step 2: Convert to fraction form
    18,203.30/25,125.32 = 11,135.66/x
  3. Step 3: Cross multiply
    18,203.30x = 25,125.32 × 11,135.66
  4. Step 4: Simplify right side
    18,203.30x = 279,787,020.91
  5. Step 5: Solve for x
    x = 279,787,020.91/18,203.30
  6. Step 6: Final answer
    x = 15,370.13

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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.