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Finding the Fourth Proportional to 21,903.57, 30,226.89 and 11,832

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Solution

The fourth proportional to 21,903.57, 30,226.89 and 11,832 is: 16,328.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.57 : 30,226.89 = 11,832 : x
  2. Step 2: Convert to fraction form
    21,903.57/30,226.89 = 11,832/x
  3. Step 3: Cross multiply
    21,903.57x = 30,226.89 × 11,832
  4. Step 4: Simplify right side
    21,903.57x = 357,644,562.48
  5. Step 5: Solve for x
    x = 357,644,562.48/21,903.57
  6. Step 6: Final answer
    x = 16,328.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.