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Finding the Fourth Proportional to 20,392.40, 30,588.40 and 6,541.44

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Solution

The fourth proportional to 20,392.40, 30,588.40 and 6,541.44 is: 9,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.40 : 30,588.40 = 6,541.44 : x
  2. Step 2: Convert to fraction form
    20,392.40/30,588.40 = 6,541.44/x
  3. Step 3: Cross multiply
    20,392.40x = 30,588.40 × 6,541.44
  4. Step 4: Simplify right side
    20,392.40x = 200,092,183.30
  5. Step 5: Solve for x
    x = 200,092,183.30/20,392.40
  6. Step 6: Final answer
    x = 9,812.10

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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.