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Finding the Fourth Proportional to 19,357.98, 29,018.70 and 15,174.78

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Solution

The fourth proportional to 19,357.98, 29,018.70 and 15,174.78 is: 22,747.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,357.98 : 29,018.70 = 15,174.78 : x
  2. Step 2: Convert to fraction form
    19,357.98/29,018.70 = 15,174.78/x
  3. Step 3: Cross multiply
    19,357.98x = 29,018.70 × 15,174.78
  4. Step 4: Simplify right side
    19,357.98x = 440,352,388.39
  5. Step 5: Solve for x
    x = 440,352,388.39/19,357.98
  6. Step 6: Final answer
    x = 22,747.85

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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.