Home / 12,721.99-19,082.79-3,104.90

Finding the Fourth Proportional to 12,721.99, 19,082.79 and 3,104.90

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Solution

The fourth proportional to 12,721.99, 19,082.79 and 3,104.90 is: 4,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.99 : 19,082.79 = 3,104.90 : x
  2. Step 2: Convert to fraction form
    12,721.99/19,082.79 = 3,104.90/x
  3. Step 3: Cross multiply
    12,721.99x = 19,082.79 × 3,104.90
  4. Step 4: Simplify right side
    12,721.99x = 59,250,154.67
  5. Step 5: Solve for x
    x = 59,250,154.67/12,721.99
  6. Step 6: Final answer
    x = 4,657.30

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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.