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Finding the Fourth Proportional to 21,939.96, 32,909.96 and 6,357.60

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Solution

The fourth proportional to 21,939.96, 32,909.96 and 6,357.60 is: 9,536.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.96 : 32,909.96 = 6,357.60 : x
  2. Step 2: Convert to fraction form
    21,939.96/32,909.96 = 6,357.60/x
  3. Step 3: Cross multiply
    21,939.96x = 32,909.96 × 6,357.60
  4. Step 4: Simplify right side
    21,939.96x = 209,228,361.70
  5. Step 5: Solve for x
    x = 209,228,361.70/21,939.96
  6. Step 6: Final answer
    x = 9,536.41

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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.