Home / 20,225.80-27,910.68-11,274.28

Finding the Fourth Proportional to 20,225.80, 27,910.68 and 11,274.28

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Solution

The fourth proportional to 20,225.80, 27,910.68 and 11,274.28 is: 15,557.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.80 : 27,910.68 = 11,274.28 : x
  2. Step 2: Convert to fraction form
    20,225.80/27,910.68 = 11,274.28/x
  3. Step 3: Cross multiply
    20,225.80x = 27,910.68 × 11,274.28
  4. Step 4: Simplify right side
    20,225.80x = 314,672,821.31
  5. Step 5: Solve for x
    x = 314,672,821.31/20,225.80
  6. Step 6: Final answer
    x = 15,557.99

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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.