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Finding the Fourth Proportional to 20,157.66, 30,244.59 and 7,019.19

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Solution

The fourth proportional to 20,157.66, 30,244.59 and 7,019.19 is: 10,531.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.66 : 30,244.59 = 7,019.19 : x
  2. Step 2: Convert to fraction form
    20,157.66/30,244.59 = 7,019.19/x
  3. Step 3: Cross multiply
    20,157.66x = 30,244.59 × 7,019.19
  4. Step 4: Simplify right side
    20,157.66x = 212,292,523.68
  5. Step 5: Solve for x
    x = 212,292,523.68/20,157.66
  6. Step 6: Final answer
    x = 10,531.61

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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.