Home / 18,768.60-28,151.01-5,620.95

Finding the Fourth Proportional to 18,768.60, 28,151.01 and 5,620.95

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Solution

The fourth proportional to 18,768.60, 28,151.01 and 5,620.95 is: 8,430.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.60 : 28,151.01 = 5,620.95 : x
  2. Step 2: Convert to fraction form
    18,768.60/28,151.01 = 5,620.95/x
  3. Step 3: Cross multiply
    18,768.60x = 28,151.01 × 5,620.95
  4. Step 4: Simplify right side
    18,768.60x = 158,235,419.66
  5. Step 5: Solve for x
    x = 158,235,419.66/18,768.60
  6. Step 6: Final answer
    x = 8,430.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.