Home / 10,447.39-15,660.75-3,871.81

Finding the Fourth Proportional to 10,447.39, 15,660.75 and 3,871.81

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Solution

The fourth proportional to 10,447.39, 15,660.75 and 3,871.81 is: 5,803.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,447.39 : 15,660.75 = 3,871.81 : x
  2. Step 2: Convert to fraction form
    10,447.39/15,660.75 = 3,871.81/x
  3. Step 3: Cross multiply
    10,447.39x = 15,660.75 × 3,871.81
  4. Step 4: Simplify right side
    10,447.39x = 60,635,448.46
  5. Step 5: Solve for x
    x = 60,635,448.46/10,447.39
  6. Step 6: Final answer
    x = 5,803.88

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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.