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Finding the Fourth Proportional to 21,335.42, 32,009.96 and 8,861.42

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Solution

The fourth proportional to 21,335.42, 32,009.96 and 8,861.42 is: 13,294.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.42 : 32,009.96 = 8,861.42 : x
  2. Step 2: Convert to fraction form
    21,335.42/32,009.96 = 8,861.42/x
  3. Step 3: Cross multiply
    21,335.42x = 32,009.96 × 8,861.42
  4. Step 4: Simplify right side
    21,335.42x = 283,653,561.85
  5. Step 5: Solve for x
    x = 283,653,561.85/21,335.42
  6. Step 6: Final answer
    x = 13,294.96

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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.