Home / 19,475.40-29,198.70-13,219.80

Finding the Fourth Proportional to 19,475.40, 29,198.70 and 13,219.80

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Solution

The fourth proportional to 19,475.40, 29,198.70 and 13,219.80 is: 19,819.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,475.40 : 29,198.70 = 13,219.80 : x
  2. Step 2: Convert to fraction form
    19,475.40/29,198.70 = 13,219.80/x
  3. Step 3: Cross multiply
    19,475.40x = 29,198.70 × 13,219.80
  4. Step 4: Simplify right side
    19,475.40x = 386,000,974.26
  5. Step 5: Solve for x
    x = 386,000,974.26/19,475.40
  6. Step 6: Final answer
    x = 19,819.93

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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.