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Finding the Fourth Proportional to 19,107.30, 28,663.65 and 5,958.30

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Solution

The fourth proportional to 19,107.30, 28,663.65 and 5,958.30 is: 8,938.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,107.30 : 28,663.65 = 5,958.30 : x
  2. Step 2: Convert to fraction form
    19,107.30/28,663.65 = 5,958.30/x
  3. Step 3: Cross multiply
    19,107.30x = 28,663.65 × 5,958.30
  4. Step 4: Simplify right side
    19,107.30x = 170,786,625.80
  5. Step 5: Solve for x
    x = 170,786,625.80/19,107.30
  6. Step 6: Final answer
    x = 8,938.29

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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.