Home / 20,791.77-28,620.34-18,134.56

Finding the Fourth Proportional to 20,791.77, 28,620.34 and 18,134.56

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Solution

The fourth proportional to 20,791.77, 28,620.34 and 18,134.56 is: 24,962.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.77 : 28,620.34 = 18,134.56 : x
  2. Step 2: Convert to fraction form
    20,791.77/28,620.34 = 18,134.56/x
  3. Step 3: Cross multiply
    20,791.77x = 28,620.34 × 18,134.56
  4. Step 4: Simplify right side
    20,791.77x = 519,017,272.95
  5. Step 5: Solve for x
    x = 519,017,272.95/20,791.77
  6. Step 6: Final answer
    x = 24,962.63

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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.