Home / 15,939.87-21,999.69-9,224.34

Finding the Fourth Proportional to 15,939.87, 21,999.69 and 9,224.34

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Solution

The fourth proportional to 15,939.87, 21,999.69 and 9,224.34 is: 12,731.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.87 : 21,999.69 = 9,224.34 : x
  2. Step 2: Convert to fraction form
    15,939.87/21,999.69 = 9,224.34/x
  3. Step 3: Cross multiply
    15,939.87x = 21,999.69 × 9,224.34
  4. Step 4: Simplify right side
    15,939.87x = 202,932,620.45
  5. Step 5: Solve for x
    x = 202,932,620.45/15,939.87
  6. Step 6: Final answer
    x = 12,731.13

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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.