Home / 21,933.60-32,890.80-8,781.60

Finding the Fourth Proportional to 21,933.60, 32,890.80 and 8,781.60

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Solution

The fourth proportional to 21,933.60, 32,890.80 and 8,781.60 is: 13,168.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.60 : 32,890.80 = 8,781.60 : x
  2. Step 2: Convert to fraction form
    21,933.60/32,890.80 = 8,781.60/x
  3. Step 3: Cross multiply
    21,933.60x = 32,890.80 × 8,781.60
  4. Step 4: Simplify right side
    21,933.60x = 288,833,849.28
  5. Step 5: Solve for x
    x = 288,833,849.28/21,933.60
  6. Step 6: Final answer
    x = 13,168.56

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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.