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Finding the Fourth Proportional to 13,353.24, 18,424.62 and 7,761.24

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Solution

The fourth proportional to 13,353.24, 18,424.62 and 7,761.24 is: 10,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.24 : 18,424.62 = 7,761.24 : x
  2. Step 2: Convert to fraction form
    13,353.24/18,424.62 = 7,761.24/x
  3. Step 3: Cross multiply
    13,353.24x = 18,424.62 × 7,761.24
  4. Step 4: Simplify right side
    13,353.24x = 142,997,897.73
  5. Step 5: Solve for x
    x = 142,997,897.73/13,353.24
  6. Step 6: Final answer
    x = 10,708.85

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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.