Home / 18,331.09-27,434.31-11,315.53

Finding the Fourth Proportional to 18,331.09, 27,434.31 and 11,315.53

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Solution

The fourth proportional to 18,331.09, 27,434.31 and 11,315.53 is: 16,934.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.09 : 27,434.31 = 11,315.53 : x
  2. Step 2: Convert to fraction form
    18,331.09/27,434.31 = 11,315.53/x
  3. Step 3: Cross multiply
    18,331.09x = 27,434.31 × 11,315.53
  4. Step 4: Simplify right side
    18,331.09x = 310,433,757.83
  5. Step 5: Solve for x
    x = 310,433,757.83/18,331.09
  6. Step 6: Final answer
    x = 16,934.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.