Home / 15,865.17-21,893.91-9,150.69

Finding the Fourth Proportional to 15,865.17, 21,893.91 and 9,150.69

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Solution

The fourth proportional to 15,865.17, 21,893.91 and 9,150.69 is: 12,627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.17 : 21,893.91 = 9,150.69 : x
  2. Step 2: Convert to fraction form
    15,865.17/21,893.91 = 9,150.69/x
  3. Step 3: Cross multiply
    15,865.17x = 21,893.91 × 9,150.69
  4. Step 4: Simplify right side
    15,865.17x = 200,344,383.30
  5. Step 5: Solve for x
    x = 200,344,383.30/15,865.17
  6. Step 6: Final answer
    x = 12,627.94

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1.5x scale

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.