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Finding the Fourth Proportional to 20,047.56, 30,071.01 and 6,900.04

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Solution

The fourth proportional to 20,047.56, 30,071.01 and 6,900.04 is: 10,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,047.56 : 30,071.01 = 6,900.04 : x
  2. Step 2: Convert to fraction form
    20,047.56/30,071.01 = 6,900.04/x
  3. Step 3: Cross multiply
    20,047.56x = 30,071.01 × 6,900.04
  4. Step 4: Simplify right side
    20,047.56x = 207,491,171.84
  5. Step 5: Solve for x
    x = 207,491,171.84/20,047.56
  6. Step 6: Final answer
    x = 10,349.95

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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.