Home / 18,795.38-28,171.19-7,688.60

Finding the Fourth Proportional to 18,795.38, 28,171.19 and 7,688.60

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Solution

The fourth proportional to 18,795.38, 28,171.19 and 7,688.60 is: 11,523.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,795.38 : 28,171.19 = 7,688.60 : x
  2. Step 2: Convert to fraction form
    18,795.38/28,171.19 = 7,688.60/x
  3. Step 3: Cross multiply
    18,795.38x = 28,171.19 × 7,688.60
  4. Step 4: Simplify right side
    18,795.38x = 216,597,153.90
  5. Step 5: Solve for x
    x = 216,597,153.90/18,795.38
  6. Step 6: Final answer
    x = 11,523.96

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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.