Home / 19,940.20-29,885.10-10,082.20

Finding the Fourth Proportional to 19,940.20, 29,885.10 and 10,082.20

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Solution

The fourth proportional to 19,940.20, 29,885.10 and 10,082.20 is: 15,110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.20 : 29,885.10 = 10,082.20 : x
  2. Step 2: Convert to fraction form
    19,940.20/29,885.10 = 10,082.20/x
  3. Step 3: Cross multiply
    19,940.20x = 29,885.10 × 10,082.20
  4. Step 4: Simplify right side
    19,940.20x = 301,307,555.22
  5. Step 5: Solve for x
    x = 301,307,555.22/19,940.20
  6. Step 6: Final answer
    x = 15,110.56

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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.