Home / 15,899.47-21,940.14-8,825.29

Finding the Fourth Proportional to 15,899.47, 21,940.14 and 8,825.29

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Solution

The fourth proportional to 15,899.47, 21,940.14 and 8,825.29 is: 12,178.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.47 : 21,940.14 = 8,825.29 : x
  2. Step 2: Convert to fraction form
    15,899.47/21,940.14 = 8,825.29/x
  3. Step 3: Cross multiply
    15,899.47x = 21,940.14 × 8,825.29
  4. Step 4: Simplify right side
    15,899.47x = 193,628,098.14
  5. Step 5: Solve for x
    x = 193,628,098.14/15,899.47
  6. Step 6: Final answer
    x = 12,178.27

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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.