Home / 11,371.67-15,702.57-7,129.83

Finding the Fourth Proportional to 11,371.67, 15,702.57 and 7,129.83

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Solution

The fourth proportional to 11,371.67, 15,702.57 and 7,129.83 is: 9,845.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,371.67 : 15,702.57 = 7,129.83 : x
  2. Step 2: Convert to fraction form
    11,371.67/15,702.57 = 7,129.83/x
  3. Step 3: Cross multiply
    11,371.67x = 15,702.57 × 7,129.83
  4. Step 4: Simplify right side
    11,371.67x = 111,956,654.66
  5. Step 5: Solve for x
    x = 111,956,654.66/11,371.67
  6. Step 6: Final answer
    x = 9,845.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.