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Finding the Fourth Proportional to 20,168.79, 30,254.63 and 5,377.63

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Solution

The fourth proportional to 20,168.79, 30,254.63 and 5,377.63 is: 8,066.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.79 : 30,254.63 = 5,377.63 : x
  2. Step 2: Convert to fraction form
    20,168.79/30,254.63 = 5,377.63/x
  3. Step 3: Cross multiply
    20,168.79x = 30,254.63 × 5,377.63
  4. Step 4: Simplify right side
    20,168.79x = 162,698,205.93
  5. Step 5: Solve for x
    x = 162,698,205.93/20,168.79
  6. Step 6: Final answer
    x = 8,066.83

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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.