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Finding the Fourth Proportional to 17,109.30, 25,683.15 and 13,230.90

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Solution

The fourth proportional to 17,109.30, 25,683.15 and 13,230.90 is: 19,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,109.30 : 25,683.15 = 13,230.90 : x
  2. Step 2: Convert to fraction form
    17,109.30/25,683.15 = 13,230.90/x
  3. Step 3: Cross multiply
    17,109.30x = 25,683.15 × 13,230.90
  4. Step 4: Simplify right side
    17,109.30x = 339,811,189.34
  5. Step 5: Solve for x
    x = 339,811,189.34/17,109.30
  6. Step 6: Final answer
    x = 19,861.20

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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.