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Finding the Fourth Proportional to 18,019.68, 26,991.12 and 10,224.48

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Solution

The fourth proportional to 18,019.68, 26,991.12 and 10,224.48 is: 15,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,019.68 : 26,991.12 = 10,224.48 : x
  2. Step 2: Convert to fraction form
    18,019.68/26,991.12 = 10,224.48/x
  3. Step 3: Cross multiply
    18,019.68x = 26,991.12 × 10,224.48
  4. Step 4: Simplify right side
    18,019.68x = 275,970,166.62
  5. Step 5: Solve for x
    x = 275,970,166.62/18,019.68
  6. Step 6: Final answer
    x = 15,314.93

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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.