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Finding the Fourth Proportional to 20,348.65, 30,523.78 and 6,310.13

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Solution

The fourth proportional to 20,348.65, 30,523.78 and 6,310.13 is: 9,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,348.65 : 30,523.78 = 6,310.13 : x
  2. Step 2: Convert to fraction form
    20,348.65/30,523.78 = 6,310.13/x
  3. Step 3: Cross multiply
    20,348.65x = 30,523.78 × 6,310.13
  4. Step 4: Simplify right side
    20,348.65x = 192,609,019.89
  5. Step 5: Solve for x
    x = 192,609,019.89/20,348.65
  6. Step 6: Final answer
    x = 9,465.45

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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.