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Finding the Fourth Proportional to 20,641.96, 30,964.14 and 7,495.72

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Solution

The fourth proportional to 20,641.96, 30,964.14 and 7,495.72 is: 11,244.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.96 : 30,964.14 = 7,495.72 : x
  2. Step 2: Convert to fraction form
    20,641.96/30,964.14 = 7,495.72/x
  3. Step 3: Cross multiply
    20,641.96x = 30,964.14 × 7,495.72
  4. Step 4: Simplify right side
    20,641.96x = 232,098,523.48
  5. Step 5: Solve for x
    x = 232,098,523.48/20,641.96
  6. Step 6: Final answer
    x = 11,244.02

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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.