Home / 19,155.56-28,734.68-5,115.53

Finding the Fourth Proportional to 19,155.56, 28,734.68 and 5,115.53

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Solution

The fourth proportional to 19,155.56, 28,734.68 and 5,115.53 is: 7,673.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.56 : 28,734.68 = 5,115.53 : x
  2. Step 2: Convert to fraction form
    19,155.56/28,734.68 = 5,115.53/x
  3. Step 3: Cross multiply
    19,155.56x = 28,734.68 × 5,115.53
  4. Step 4: Simplify right side
    19,155.56x = 146,993,202.21
  5. Step 5: Solve for x
    x = 146,993,202.21/19,155.56
  6. Step 6: Final answer
    x = 7,673.66

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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.