Home / 15,861.97-21,889.42-9,147.52

Finding the Fourth Proportional to 15,861.97, 21,889.42 and 9,147.52

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Solution

The fourth proportional to 15,861.97, 21,889.42 and 9,147.52 is: 12,623.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.97 : 21,889.42 = 9,147.52 : x
  2. Step 2: Convert to fraction form
    15,861.97/21,889.42 = 9,147.52/x
  3. Step 3: Cross multiply
    15,861.97x = 21,889.42 × 9,147.52
  4. Step 4: Simplify right side
    15,861.97x = 200,233,907.24
  5. Step 5: Solve for x
    x = 200,233,907.24/15,861.97
  6. Step 6: Final answer
    x = 12,623.52

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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.