Home / 28,855.56-39,821.35-18,100.89

Finding the Fourth Proportional to 28,855.56, 39,821.35 and 18,100.89

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Solution

The fourth proportional to 28,855.56, 39,821.35 and 18,100.89 is: 24,979.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.56 : 39,821.35 = 18,100.89 : x
  2. Step 2: Convert to fraction form
    28,855.56/39,821.35 = 18,100.89/x
  3. Step 3: Cross multiply
    28,855.56x = 39,821.35 × 18,100.89
  4. Step 4: Simplify right side
    28,855.56x = 720,801,780.97
  5. Step 5: Solve for x
    x = 720,801,780.97/28,855.56
  6. Step 6: Final answer
    x = 24,979.65

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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.