Home / 28,345.73-39,076.11-18,769.55

Finding the Fourth Proportional to 28,345.73, 39,076.11 and 18,769.55

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Solution

The fourth proportional to 28,345.73, 39,076.11 and 18,769.55 is: 25,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.73 : 39,076.11 = 18,769.55 : x
  2. Step 2: Convert to fraction form
    28,345.73/39,076.11 = 18,769.55/x
  3. Step 3: Cross multiply
    28,345.73x = 39,076.11 × 18,769.55
  4. Step 4: Simplify right side
    28,345.73x = 733,440,805.07
  5. Step 5: Solve for x
    x = 733,440,805.07/28,345.73
  6. Step 6: Final answer
    x = 25,874.83

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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.