Home / 15,940.26-21,997.78-8,866.87

Finding the Fourth Proportional to 15,940.26, 21,997.78 and 8,866.87

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Solution

The fourth proportional to 15,940.26, 21,997.78 and 8,866.87 is: 12,236.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,940.26 : 21,997.78 = 8,866.87 : x
  2. Step 2: Convert to fraction form
    15,940.26/21,997.78 = 8,866.87/x
  3. Step 3: Cross multiply
    15,940.26x = 21,997.78 × 8,866.87
  4. Step 4: Simplify right side
    15,940.26x = 195,051,378.39
  5. Step 5: Solve for x
    x = 195,051,378.39/15,940.26
  6. Step 6: Final answer
    x = 12,236.40

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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.