Home / 21,889.68-30,204.72-12,327.96

Finding the Fourth Proportional to 21,889.68, 30,204.72 and 12,327.96

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Solution

The fourth proportional to 21,889.68, 30,204.72 and 12,327.96 is: 17,010.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.68 : 30,204.72 = 12,327.96 : x
  2. Step 2: Convert to fraction form
    21,889.68/30,204.72 = 12,327.96/x
  3. Step 3: Cross multiply
    21,889.68x = 30,204.72 × 12,327.96
  4. Step 4: Simplify right side
    21,889.68x = 372,362,579.97
  5. Step 5: Solve for x
    x = 372,362,579.97/21,889.68
  6. Step 6: Final answer
    x = 17,010.87

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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.