Home / 20,849.01-28,771.65-11,288.89

Finding the Fourth Proportional to 20,849.01, 28,771.65 and 11,288.89

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Solution

The fourth proportional to 20,849.01, 28,771.65 and 11,288.89 is: 15,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.01 : 28,771.65 = 11,288.89 : x
  2. Step 2: Convert to fraction form
    20,849.01/28,771.65 = 11,288.89/x
  3. Step 3: Cross multiply
    20,849.01x = 28,771.65 × 11,288.89
  4. Step 4: Simplify right side
    20,849.01x = 324,799,991.97
  5. Step 5: Solve for x
    x = 324,799,991.97/20,849.01
  6. Step 6: Final answer
    x = 15,578.68

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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.