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Finding the Fourth Proportional to 20,601.63, 30,902.46 and 5,019.12

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Solution

The fourth proportional to 20,601.63, 30,902.46 and 5,019.12 is: 7,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.63 : 30,902.46 = 5,019.12 : x
  2. Step 2: Convert to fraction form
    20,601.63/30,902.46 = 5,019.12/x
  3. Step 3: Cross multiply
    20,601.63x = 30,902.46 × 5,019.12
  4. Step 4: Simplify right side
    20,601.63x = 155,103,155.04
  5. Step 5: Solve for x
    x = 155,103,155.04/20,601.63
  6. Step 6: Final answer
    x = 7,528.68

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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.