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Finding the Fourth Proportional to 19,799.69, 29,709.29 and 9,270.42

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Solution

The fourth proportional to 19,799.69, 29,709.29 and 9,270.42 is: 13,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,799.69 : 29,709.29 = 9,270.42 : x
  2. Step 2: Convert to fraction form
    19,799.69/29,709.29 = 9,270.42/x
  3. Step 3: Cross multiply
    19,799.69x = 29,709.29 × 9,270.42
  4. Step 4: Simplify right side
    19,799.69x = 275,417,596.20
  5. Step 5: Solve for x
    x = 275,417,596.20/19,799.69
  6. Step 6: Final answer
    x = 13,910.20

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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.