Home / 15,342.52-21,171.32-8,626

Finding the Fourth Proportional to 15,342.52, 21,171.32 and 8,626

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Solution

The fourth proportional to 15,342.52, 21,171.32 and 8,626 is: 11,903.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.52 : 21,171.32 = 8,626 : x
  2. Step 2: Convert to fraction form
    15,342.52/21,171.32 = 8,626/x
  3. Step 3: Cross multiply
    15,342.52x = 21,171.32 × 8,626
  4. Step 4: Simplify right side
    15,342.52x = 182,623,806.32
  5. Step 5: Solve for x
    x = 182,623,806.32/15,342.52
  6. Step 6: Final answer
    x = 11,903.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.