Home / 28,508.64-42,759.24-11,865.54

Finding the Fourth Proportional to 28,508.64, 42,759.24 and 11,865.54

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Solution

The fourth proportional to 28,508.64, 42,759.24 and 11,865.54 is: 17,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,508.64 : 42,759.24 = 11,865.54 : x
  2. Step 2: Convert to fraction form
    28,508.64/42,759.24 = 11,865.54/x
  3. Step 3: Cross multiply
    28,508.64x = 42,759.24 × 11,865.54
  4. Step 4: Simplify right side
    28,508.64x = 507,361,472.59
  5. Step 5: Solve for x
    x = 507,361,472.59/28,508.64
  6. Step 6: Final answer
    x = 17,796.76

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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.