Home / 28,203.56-42,306.11-8,212.25

Finding the Fourth Proportional to 28,203.56, 42,306.11 and 8,212.25

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Solution

The fourth proportional to 28,203.56, 42,306.11 and 8,212.25 is: 12,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.56 : 42,306.11 = 8,212.25 : x
  2. Step 2: Convert to fraction form
    28,203.56/42,306.11 = 8,212.25/x
  3. Step 3: Cross multiply
    28,203.56x = 42,306.11 × 8,212.25
  4. Step 4: Simplify right side
    28,203.56x = 347,428,493.54
  5. Step 5: Solve for x
    x = 347,428,493.54/28,203.56
  6. Step 6: Final answer
    x = 12,318.60

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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.