Home / 42,819.92-64,238.11-13,236.69

Finding the Fourth Proportional to 42,819.92, 64,238.11 and 13,236.69

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Solution

The fourth proportional to 42,819.92, 64,238.11 and 13,236.69 is: 19,857.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,819.92 : 64,238.11 = 13,236.69 : x
  2. Step 2: Convert to fraction form
    42,819.92/64,238.11 = 13,236.69/x
  3. Step 3: Cross multiply
    42,819.92x = 64,238.11 × 13,236.69
  4. Step 4: Simplify right side
    42,819.92x = 850,299,915.16
  5. Step 5: Solve for x
    x = 850,299,915.16/42,819.92
  6. Step 6: Final answer
    x = 19,857.58

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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.