Home / 19,774.28-27,288.50-10,821.79

Finding the Fourth Proportional to 19,774.28, 27,288.50 and 10,821.79

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Solution

The fourth proportional to 19,774.28, 27,288.50 and 10,821.79 is: 14,934.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,774.28 : 27,288.50 = 10,821.79 : x
  2. Step 2: Convert to fraction form
    19,774.28/27,288.50 = 10,821.79/x
  3. Step 3: Cross multiply
    19,774.28x = 27,288.50 × 10,821.79
  4. Step 4: Simplify right side
    19,774.28x = 295,310,279.97
  5. Step 5: Solve for x
    x = 295,310,279.97/19,774.28
  6. Step 6: Final answer
    x = 14,934.06

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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.