Home / 19,174.13-28,759.18-5,135.60

Finding the Fourth Proportional to 19,174.13, 28,759.18 and 5,135.60

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Solution

The fourth proportional to 19,174.13, 28,759.18 and 5,135.60 is: 7,702.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.13 : 28,759.18 = 5,135.60 : x
  2. Step 2: Convert to fraction form
    19,174.13/28,759.18 = 5,135.60/x
  3. Step 3: Cross multiply
    19,174.13x = 28,759.18 × 5,135.60
  4. Step 4: Simplify right side
    19,174.13x = 147,695,644.81
  5. Step 5: Solve for x
    x = 147,695,644.81/19,174.13
  6. Step 6: Final answer
    x = 7,702.86

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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.