Home / 15,865.32-21,896.45-9,149.61

Finding the Fourth Proportional to 15,865.32, 21,896.45 and 9,149.61

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Solution

The fourth proportional to 15,865.32, 21,896.45 and 9,149.61 is: 12,627.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,865.32 : 21,896.45 = 9,149.61 : x
  2. Step 2: Convert to fraction form
    15,865.32/21,896.45 = 9,149.61/x
  3. Step 3: Cross multiply
    15,865.32x = 21,896.45 × 9,149.61
  4. Step 4: Simplify right side
    15,865.32x = 200,343,932.14
  5. Step 5: Solve for x
    x = 200,343,932.14/15,865.32
  6. Step 6: Final answer
    x = 12,627.79

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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.