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Finding the Fourth Proportional to 17,609.90, 26,428.10 and 13,651.47

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Solution

The fourth proportional to 17,609.90, 26,428.10 and 13,651.47 is: 20,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,609.90 : 26,428.10 = 13,651.47 : x
  2. Step 2: Convert to fraction form
    17,609.90/26,428.10 = 13,651.47/x
  3. Step 3: Cross multiply
    17,609.90x = 26,428.10 × 13,651.47
  4. Step 4: Simplify right side
    17,609.90x = 360,782,346.05
  5. Step 5: Solve for x
    x = 360,782,346.05/17,609.90
  6. Step 6: Final answer
    x = 20,487.48

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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.