Home / 43,212.81-64,819.22-10,380.81

Finding the Fourth Proportional to 43,212.81, 64,819.22 and 10,380.81

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Solution

The fourth proportional to 43,212.81, 64,819.22 and 10,380.81 is: 15,571.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,212.81 : 64,819.22 = 10,380.81 : x
  2. Step 2: Convert to fraction form
    43,212.81/64,819.22 = 10,380.81/x
  3. Step 3: Cross multiply
    43,212.81x = 64,819.22 × 10,380.81
  4. Step 4: Simplify right side
    43,212.81x = 672,876,007.17
  5. Step 5: Solve for x
    x = 672,876,007.17/43,212.81
  6. Step 6: Final answer
    x = 15,571.22

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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.