Home / 21,933.20-32,905.28-12,583.76

Finding the Fourth Proportional to 21,933.20, 32,905.28 and 12,583.76

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Solution

The fourth proportional to 21,933.20, 32,905.28 and 12,583.76 is: 18,878.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.20 : 32,905.28 = 12,583.76 : x
  2. Step 2: Convert to fraction form
    21,933.20/32,905.28 = 12,583.76/x
  3. Step 3: Cross multiply
    21,933.20x = 32,905.28 × 12,583.76
  4. Step 4: Simplify right side
    21,933.20x = 414,072,146.25
  5. Step 5: Solve for x
    x = 414,072,146.25/21,933.20
  6. Step 6: Final answer
    x = 18,878.78

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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.