Home / 15,943.87-21,999.20-9,229.09

Finding the Fourth Proportional to 15,943.87, 21,999.20 and 9,229.09

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Solution

The fourth proportional to 15,943.87, 21,999.20 and 9,229.09 is: 12,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,943.87 : 21,999.20 = 9,229.09 : x
  2. Step 2: Convert to fraction form
    15,943.87/21,999.20 = 9,229.09/x
  3. Step 3: Cross multiply
    15,943.87x = 21,999.20 × 9,229.09
  4. Step 4: Simplify right side
    15,943.87x = 203,032,440.59
  5. Step 5: Solve for x
    x = 203,032,440.59/15,943.87
  6. Step 6: Final answer
    x = 12,734.20

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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.