Home / 21,214.82-31,823.81-6,424.92

Finding the Fourth Proportional to 21,214.82, 31,823.81 and 6,424.92

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Solution

The fourth proportional to 21,214.82, 31,823.81 and 6,424.92 is: 9,637.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.82 : 31,823.81 = 6,424.92 : x
  2. Step 2: Convert to fraction form
    21,214.82/31,823.81 = 6,424.92/x
  3. Step 3: Cross multiply
    21,214.82x = 31,823.81 × 6,424.92
  4. Step 4: Simplify right side
    21,214.82x = 204,465,401.22
  5. Step 5: Solve for x
    x = 204,465,401.22/21,214.82
  6. Step 6: Final answer
    x = 9,637.86

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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.