Home / 22,272.16-30,665.64-18,908

Finding the Fourth Proportional to 22,272.16, 30,665.64 and 18,908

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Solution

The fourth proportional to 22,272.16, 30,665.64 and 18,908 is: 26,033.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,272.16 : 30,665.64 = 18,908 : x
  2. Step 2: Convert to fraction form
    22,272.16/30,665.64 = 18,908/x
  3. Step 3: Cross multiply
    22,272.16x = 30,665.64 × 18,908
  4. Step 4: Simplify right side
    22,272.16x = 579,825,921.12
  5. Step 5: Solve for x
    x = 579,825,921.12/22,272.16
  6. Step 6: Final answer
    x = 26,033.66

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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.