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Finding the Fourth Proportional to 20,210.94, 30,321.18 and 6,359.94

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Solution

The fourth proportional to 20,210.94, 30,321.18 and 6,359.94 is: 9,541.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.94 : 30,321.18 = 6,359.94 : x
  2. Step 2: Convert to fraction form
    20,210.94/30,321.18 = 6,359.94/x
  3. Step 3: Cross multiply
    20,210.94x = 30,321.18 × 6,359.94
  4. Step 4: Simplify right side
    20,210.94x = 192,840,885.53
  5. Step 5: Solve for x
    x = 192,840,885.53/20,210.94
  6. Step 6: Final answer
    x = 9,541.41

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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.