Home / 18,933.66-26,138.88-11,381.82

Finding the Fourth Proportional to 18,933.66, 26,138.88 and 11,381.82

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Solution

The fourth proportional to 18,933.66, 26,138.88 and 11,381.82 is: 15,713.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,933.66 : 26,138.88 = 11,381.82 : x
  2. Step 2: Convert to fraction form
    18,933.66/26,138.88 = 11,381.82/x
  3. Step 3: Cross multiply
    18,933.66x = 26,138.88 × 11,381.82
  4. Step 4: Simplify right side
    18,933.66x = 297,508,027.16
  5. Step 5: Solve for x
    x = 297,508,027.16/18,933.66
  6. Step 6: Final answer
    x = 15,713.18

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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.