Home / 42,815.88-64,229.88-13,236.30

Finding the Fourth Proportional to 42,815.88, 64,229.88 and 13,236.30

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Solution

The fourth proportional to 42,815.88, 64,229.88 and 13,236.30 is: 19,856.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,815.88 : 64,229.88 = 13,236.30 : x
  2. Step 2: Convert to fraction form
    42,815.88/64,229.88 = 13,236.30/x
  3. Step 3: Cross multiply
    42,815.88x = 64,229.88 × 13,236.30
  4. Step 4: Simplify right side
    42,815.88x = 850,165,960.64
  5. Step 5: Solve for x
    x = 850,165,960.64/42,815.88
  6. Step 6: Final answer
    x = 19,856.32

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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.