Home / 21,229.92-31,844.54-5,434.82

Finding the Fourth Proportional to 21,229.92, 31,844.54 and 5,434.82

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Solution

The fourth proportional to 21,229.92, 31,844.54 and 5,434.82 is: 8,152.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.92 : 31,844.54 = 5,434.82 : x
  2. Step 2: Convert to fraction form
    21,229.92/31,844.54 = 5,434.82/x
  3. Step 3: Cross multiply
    21,229.92x = 31,844.54 × 5,434.82
  4. Step 4: Simplify right side
    21,229.92x = 173,069,156.49
  5. Step 5: Solve for x
    x = 173,069,156.49/21,229.92
  6. Step 6: Final answer
    x = 8,152.14

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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.