Home / 10,391.63-15,577.92-3,812.81

Finding the Fourth Proportional to 10,391.63, 15,577.92 and 3,812.81

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Solution

The fourth proportional to 10,391.63, 15,577.92 and 3,812.81 is: 5,715.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.63 : 15,577.92 = 3,812.81 : x
  2. Step 2: Convert to fraction form
    10,391.63/15,577.92 = 3,812.81/x
  3. Step 3: Cross multiply
    10,391.63x = 15,577.92 × 3,812.81
  4. Step 4: Simplify right side
    10,391.63x = 59,395,571.27
  5. Step 5: Solve for x
    x = 59,395,571.27/10,391.63
  6. Step 6: Final answer
    x = 5,715.72

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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.