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Finding the Fourth Proportional to 19,270.29, 28,910.29 and 5,419.29

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Solution

The fourth proportional to 19,270.29, 28,910.29 and 5,419.29 is: 8,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270.29 : 28,910.29 = 5,419.29 : x
  2. Step 2: Convert to fraction form
    19,270.29/28,910.29 = 5,419.29/x
  3. Step 3: Cross multiply
    19,270.29x = 28,910.29 × 5,419.29
  4. Step 4: Simplify right side
    19,270.29x = 156,673,245.49
  5. Step 5: Solve for x
    x = 156,673,245.49/19,270.29
  6. Step 6: Final answer
    x = 8,130.30

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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.