Home / 21,887.44-30,204.79-12,456.01

Finding the Fourth Proportional to 21,887.44, 30,204.79 and 12,456.01

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Solution

The fourth proportional to 21,887.44, 30,204.79 and 12,456.01 is: 17,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.44 : 30,204.79 = 12,456.01 : x
  2. Step 2: Convert to fraction form
    21,887.44/30,204.79 = 12,456.01/x
  3. Step 3: Cross multiply
    21,887.44x = 30,204.79 × 12,456.01
  4. Step 4: Simplify right side
    21,887.44x = 376,231,073.07
  5. Step 5: Solve for x
    x = 376,231,073.07/21,887.44
  6. Step 6: Final answer
    x = 17,189.36

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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.