Home / 18,721.68-28,088.31-11,233.59

Finding the Fourth Proportional to 18,721.68, 28,088.31 and 11,233.59

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Solution

The fourth proportional to 18,721.68, 28,088.31 and 11,233.59 is: 16,853.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.68 : 28,088.31 = 11,233.59 : x
  2. Step 2: Convert to fraction form
    18,721.68/28,088.31 = 11,233.59/x
  3. Step 3: Cross multiply
    18,721.68x = 28,088.31 × 11,233.59
  4. Step 4: Simplify right side
    18,721.68x = 315,532,558.33
  5. Step 5: Solve for x
    x = 315,532,558.33/18,721.68
  6. Step 6: Final answer
    x = 16,853.86

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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.