Home / 21,217.05-31,818.20-10,683

Finding the Fourth Proportional to 21,217.05, 31,818.20 and 10,683

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Solution

The fourth proportional to 21,217.05, 31,818.20 and 10,683 is: 16,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.05 : 31,818.20 = 10,683 : x
  2. Step 2: Convert to fraction form
    21,217.05/31,818.20 = 10,683/x
  3. Step 3: Cross multiply
    21,217.05x = 31,818.20 × 10,683
  4. Step 4: Simplify right side
    21,217.05x = 339,913,777.19
  5. Step 5: Solve for x
    x = 339,913,777.19/21,217.05
  6. Step 6: Final answer
    x = 16,020.78

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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.