Home / 40,865.60-61,298.40-13,163.60

Finding the Fourth Proportional to 40,865.60, 61,298.40 and 13,163.60

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Solution

The fourth proportional to 40,865.60, 61,298.40 and 13,163.60 is: 19,745.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,865.60 : 61,298.40 = 13,163.60 : x
  2. Step 2: Convert to fraction form
    40,865.60/61,298.40 = 13,163.60/x
  3. Step 3: Cross multiply
    40,865.60x = 61,298.40 × 13,163.60
  4. Step 4: Simplify right side
    40,865.60x = 806,907,618.24
  5. Step 5: Solve for x
    x = 806,907,618.24/40,865.60
  6. Step 6: Final answer
    x = 19,745.40

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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.