Home / 14,121.96-21,178.08-5,359.38

Finding the Fourth Proportional to 14,121.96, 21,178.08 and 5,359.38

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Solution

The fourth proportional to 14,121.96, 21,178.08 and 5,359.38 is: 8,037.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.96 : 21,178.08 = 5,359.38 : x
  2. Step 2: Convert to fraction form
    14,121.96/21,178.08 = 5,359.38/x
  3. Step 3: Cross multiply
    14,121.96x = 21,178.08 × 5,359.38
  4. Step 4: Simplify right side
    14,121.96x = 113,501,378.39
  5. Step 5: Solve for x
    x = 113,501,378.39/14,121.96
  6. Step 6: Final answer
    x = 8,037.23

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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.