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Finding the Fourth Proportional to 20,635.34, 30,953.06 and 7,487.72

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Solution

The fourth proportional to 20,635.34, 30,953.06 and 7,487.72 is: 11,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.34 : 30,953.06 = 7,487.72 : x
  2. Step 2: Convert to fraction form
    20,635.34/30,953.06 = 7,487.72/x
  3. Step 3: Cross multiply
    20,635.34x = 30,953.06 × 7,487.72
  4. Step 4: Simplify right side
    20,635.34x = 231,767,846.42
  5. Step 5: Solve for x
    x = 231,767,846.42/20,635.34
  6. Step 6: Final answer
    x = 11,231.60

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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.