Home / 28,523.73-39,363.43-15,777.78

Finding the Fourth Proportional to 28,523.73, 39,363.43 and 15,777.78

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Solution

The fourth proportional to 28,523.73, 39,363.43 and 15,777.78 is: 21,773.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,523.73 : 39,363.43 = 15,777.78 : x
  2. Step 2: Convert to fraction form
    28,523.73/39,363.43 = 15,777.78/x
  3. Step 3: Cross multiply
    28,523.73x = 39,363.43 × 15,777.78
  4. Step 4: Simplify right side
    28,523.73x = 621,067,538.59
  5. Step 5: Solve for x
    x = 621,067,538.59/28,523.73
  6. Step 6: Final answer
    x = 21,773.71

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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.