Home / 13,424.42-20,139.78-4,064.51

Finding the Fourth Proportional to 13,424.42, 20,139.78 and 4,064.51

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Solution

The fourth proportional to 13,424.42, 20,139.78 and 4,064.51 is: 6,097.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.42 : 20,139.78 = 4,064.51 : x
  2. Step 2: Convert to fraction form
    13,424.42/20,139.78 = 4,064.51/x
  3. Step 3: Cross multiply
    13,424.42x = 20,139.78 × 4,064.51
  4. Step 4: Simplify right side
    13,424.42x = 81,858,236.51
  5. Step 5: Solve for x
    x = 81,858,236.51/13,424.42
  6. Step 6: Final answer
    x = 6,097.71

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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.