Home / 21,336.45-31,994.45-10,082.43

Finding the Fourth Proportional to 21,336.45, 31,994.45 and 10,082.43

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Solution

The fourth proportional to 21,336.45, 31,994.45 and 10,082.43 is: 15,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.45 : 31,994.45 = 10,082.43 : x
  2. Step 2: Convert to fraction form
    21,336.45/31,994.45 = 10,082.43/x
  3. Step 3: Cross multiply
    21,336.45x = 31,994.45 × 10,082.43
  4. Step 4: Simplify right side
    21,336.45x = 322,581,683.90
  5. Step 5: Solve for x
    x = 322,581,683.90/21,336.45
  6. Step 6: Final answer
    x = 15,118.80

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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.