Home / 20,300.09-27,995.97-12,747.12

Finding the Fourth Proportional to 20,300.09, 27,995.97 and 12,747.12

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Solution

The fourth proportional to 20,300.09, 27,995.97 and 12,747.12 is: 17,579.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.09 : 27,995.97 = 12,747.12 : x
  2. Step 2: Convert to fraction form
    20,300.09/27,995.97 = 12,747.12/x
  3. Step 3: Cross multiply
    20,300.09x = 27,995.97 × 12,747.12
  4. Step 4: Simplify right side
    20,300.09x = 356,867,989.11
  5. Step 5: Solve for x
    x = 356,867,989.11/20,300.09
  6. Step 6: Final answer
    x = 17,579.63

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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.