Home / 21,078.24-31,617.36-7,227.36

Finding the Fourth Proportional to 21,078.24, 31,617.36 and 7,227.36

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Solution

The fourth proportional to 21,078.24, 31,617.36 and 7,227.36 is: 10,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.24 : 31,617.36 = 7,227.36 : x
  2. Step 2: Convert to fraction form
    21,078.24/31,617.36 = 7,227.36/x
  3. Step 3: Cross multiply
    21,078.24x = 31,617.36 × 7,227.36
  4. Step 4: Simplify right side
    21,078.24x = 228,510,042.97
  5. Step 5: Solve for x
    x = 228,510,042.97/21,078.24
  6. Step 6: Final answer
    x = 10,841.04

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1.5x scale

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.