Home / 13,581.23-20,357.33-5,681.75

Finding the Fourth Proportional to 13,581.23, 20,357.33 and 5,681.75

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Solution

The fourth proportional to 13,581.23, 20,357.33 and 5,681.75 is: 8,516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.23 : 20,357.33 = 5,681.75 : x
  2. Step 2: Convert to fraction form
    13,581.23/20,357.33 = 5,681.75/x
  3. Step 3: Cross multiply
    13,581.23x = 20,357.33 × 5,681.75
  4. Step 4: Simplify right side
    13,581.23x = 115,665,129.53
  5. Step 5: Solve for x
    x = 115,665,129.53/13,581.23
  6. Step 6: Final answer
    x = 8,516.55

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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.