Home / 28,542.09-39,387.11-15,795.81

Finding the Fourth Proportional to 28,542.09, 39,387.11 and 15,795.81

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Solution

The fourth proportional to 28,542.09, 39,387.11 and 15,795.81 is: 21,797.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,542.09 : 39,387.11 = 15,795.81 : x
  2. Step 2: Convert to fraction form
    28,542.09/39,387.11 = 15,795.81/x
  3. Step 3: Cross multiply
    28,542.09x = 39,387.11 × 15,795.81
  4. Step 4: Simplify right side
    28,542.09x = 622,151,306.01
  5. Step 5: Solve for x
    x = 622,151,306.01/28,542.09
  6. Step 6: Final answer
    x = 21,797.68

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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.