Home / 21,193.05-31,789.82-6,402.09

Finding the Fourth Proportional to 21,193.05, 31,789.82 and 6,402.09

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Solution

The fourth proportional to 21,193.05, 31,789.82 and 6,402.09 is: 9,603.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.05 : 31,789.82 = 6,402.09 : x
  2. Step 2: Convert to fraction form
    21,193.05/31,789.82 = 6,402.09/x
  3. Step 3: Cross multiply
    21,193.05x = 31,789.82 × 6,402.09
  4. Step 4: Simplify right side
    21,193.05x = 203,521,256.71
  5. Step 5: Solve for x
    x = 203,521,256.71/21,193.05
  6. Step 6: Final answer
    x = 9,603.21

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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.