Home / 13,128.73-19,702.19-5,230.47

Finding the Fourth Proportional to 13,128.73, 19,702.19 and 5,230.47

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Solution

The fourth proportional to 13,128.73, 19,702.19 and 5,230.47 is: 7,849.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.73 : 19,702.19 = 5,230.47 : x
  2. Step 2: Convert to fraction form
    13,128.73/19,702.19 = 5,230.47/x
  3. Step 3: Cross multiply
    13,128.73x = 19,702.19 × 5,230.47
  4. Step 4: Simplify right side
    13,128.73x = 103,051,771.27
  5. Step 5: Solve for x
    x = 103,051,771.27/13,128.73
  6. Step 6: Final answer
    x = 7,849.33

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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.