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Finding the Fourth Proportional to 17,920.68, 26,802.42 and 15,960.14

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Solution

The fourth proportional to 17,920.68, 26,802.42 and 15,960.14 is: 23,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.68 : 26,802.42 = 15,960.14 : x
  2. Step 2: Convert to fraction form
    17,920.68/26,802.42 = 15,960.14/x
  3. Step 3: Cross multiply
    17,920.68x = 26,802.42 × 15,960.14
  4. Step 4: Simplify right side
    17,920.68x = 427,770,375.54
  5. Step 5: Solve for x
    x = 427,770,375.54/17,920.68
  6. Step 6: Final answer
    x = 23,870.21

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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.