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Finding the Fourth Proportional to 20,423.96, 30,635.97 and 6,384.06

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Solution

The fourth proportional to 20,423.96, 30,635.97 and 6,384.06 is: 9,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.96 : 30,635.97 = 6,384.06 : x
  2. Step 2: Convert to fraction form
    20,423.96/30,635.97 = 6,384.06/x
  3. Step 3: Cross multiply
    20,423.96x = 30,635.97 × 6,384.06
  4. Step 4: Simplify right side
    20,423.96x = 195,581,870.64
  5. Step 5: Solve for x
    x = 195,581,870.64/20,423.96
  6. Step 6: Final answer
    x = 9,576.10

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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.