Home / 19,129.38-28,688.49-7,439.82

Finding the Fourth Proportional to 19,129.38, 28,688.49 and 7,439.82

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Solution

The fourth proportional to 19,129.38, 28,688.49 and 7,439.82 is: 11,157.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.38 : 28,688.49 = 7,439.82 : x
  2. Step 2: Convert to fraction form
    19,129.38/28,688.49 = 7,439.82/x
  3. Step 3: Cross multiply
    19,129.38x = 28,688.49 × 7,439.82
  4. Step 4: Simplify right side
    19,129.38x = 213,437,201.67
  5. Step 5: Solve for x
    x = 213,437,201.67/19,129.38
  6. Step 6: Final answer
    x = 11,157.56

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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.