Home / 19,687.04-29,512.72-7,198.20

Finding the Fourth Proportional to 19,687.04, 29,512.72 and 7,198.20

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Solution

The fourth proportional to 19,687.04, 29,512.72 and 7,198.20 is: 10,790.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.04 : 29,512.72 = 7,198.20 : x
  2. Step 2: Convert to fraction form
    19,687.04/29,512.72 = 7,198.20/x
  3. Step 3: Cross multiply
    19,687.04x = 29,512.72 × 7,198.20
  4. Step 4: Simplify right side
    19,687.04x = 212,438,461.10
  5. Step 5: Solve for x
    x = 212,438,461.10/19,687.04
  6. Step 6: Final answer
    x = 10,790.78

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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.