Home / 15,912.44-21,959.79-10,887.20

Finding the Fourth Proportional to 15,912.44, 21,959.79 and 10,887.20

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Solution

The fourth proportional to 15,912.44, 21,959.79 and 10,887.20 is: 15,024.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.44 : 21,959.79 = 10,887.20 : x
  2. Step 2: Convert to fraction form
    15,912.44/21,959.79 = 10,887.20/x
  3. Step 3: Cross multiply
    15,912.44x = 21,959.79 × 10,887.20
  4. Step 4: Simplify right side
    15,912.44x = 239,080,625.69
  5. Step 5: Solve for x
    x = 239,080,625.69/15,912.44
  6. Step 6: Final answer
    x = 15,024.76

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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.