Home / 21,995.25-30,353.49-12,563.79

Finding the Fourth Proportional to 21,995.25, 30,353.49 and 12,563.79

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Solution

The fourth proportional to 21,995.25, 30,353.49 and 12,563.79 is: 17,338.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.25 : 30,353.49 = 12,563.79 : x
  2. Step 2: Convert to fraction form
    21,995.25/30,353.49 = 12,563.79/x
  3. Step 3: Cross multiply
    21,995.25x = 30,353.49 × 12,563.79
  4. Step 4: Simplify right side
    21,995.25x = 381,354,874.13
  5. Step 5: Solve for x
    x = 381,354,874.13/21,995.25
  6. Step 6: Final answer
    x = 17,338.06

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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.