Home / 15,887.26-21,922.81-9,175.03

Finding the Fourth Proportional to 15,887.26, 21,922.81 and 9,175.03

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Solution

The fourth proportional to 15,887.26, 21,922.81 and 9,175.03 is: 12,660.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,887.26 : 21,922.81 = 9,175.03 : x
  2. Step 2: Convert to fraction form
    15,887.26/21,922.81 = 9,175.03/x
  3. Step 3: Cross multiply
    15,887.26x = 21,922.81 × 9,175.03
  4. Step 4: Simplify right side
    15,887.26x = 201,142,439.43
  5. Step 5: Solve for x
    x = 201,142,439.43/15,887.26
  6. Step 6: Final answer
    x = 12,660.61

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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.