Home / 9,286.33-13,916.40-5,128.21

Finding the Fourth Proportional to 9,286.33, 13,916.40 and 5,128.21

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Solution

The fourth proportional to 9,286.33, 13,916.40 and 5,128.21 is: 7,685.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,286.33 : 13,916.40 = 5,128.21 : x
  2. Step 2: Convert to fraction form
    9,286.33/13,916.40 = 5,128.21/x
  3. Step 3: Cross multiply
    9,286.33x = 13,916.40 × 5,128.21
  4. Step 4: Simplify right side
    9,286.33x = 71,366,221.64
  5. Step 5: Solve for x
    x = 71,366,221.64/9,286.33
  6. Step 6: Final answer
    x = 7,685.08

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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.