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Finding the Fourth Proportional to 21,933.99, 32,901.80 and 6,138.99

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Solution

The fourth proportional to 21,933.99, 32,901.80 and 6,138.99 is: 9,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.99 : 32,901.80 = 6,138.99 : x
  2. Step 2: Convert to fraction form
    21,933.99/32,901.80 = 6,138.99/x
  3. Step 3: Cross multiply
    21,933.99x = 32,901.80 × 6,138.99
  4. Step 4: Simplify right side
    21,933.99x = 201,983,790.49
  5. Step 5: Solve for x
    x = 201,983,790.49/21,933.99
  6. Step 6: Final answer
    x = 9,208.71

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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.