Home / 21,006.24-31,498.64-6,961.26

Finding the Fourth Proportional to 21,006.24, 31,498.64 and 6,961.26

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Solution

The fourth proportional to 21,006.24, 31,498.64 and 6,961.26 is: 10,438.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.24 : 31,498.64 = 6,961.26 : x
  2. Step 2: Convert to fraction form
    21,006.24/31,498.64 = 6,961.26/x
  3. Step 3: Cross multiply
    21,006.24x = 31,498.64 × 6,961.26
  4. Step 4: Simplify right side
    21,006.24x = 219,270,358.21
  5. Step 5: Solve for x
    x = 219,270,358.21/21,006.24
  6. Step 6: Final answer
    x = 10,438.34

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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.