Home / 54,212.09-81,298.15-18,663.28

Finding the Fourth Proportional to 54,212.09, 81,298.15 and 18,663.28

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Solution

The fourth proportional to 54,212.09, 81,298.15 and 18,663.28 is: 27,988.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,212.09 : 81,298.15 = 18,663.28 : x
  2. Step 2: Convert to fraction form
    54,212.09/81,298.15 = 18,663.28/x
  3. Step 3: Cross multiply
    54,212.09x = 81,298.15 × 18,663.28
  4. Step 4: Simplify right side
    54,212.09x = 1,517,289,887.03
  5. Step 5: Solve for x
    x = 1,517,289,887.03/54,212.09
  6. Step 6: Final answer
    x = 27,988.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.