Home / 27,786.40-38,320.39-20,250.29

Finding the Fourth Proportional to 27,786.40, 38,320.39 and 20,250.29

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Solution

The fourth proportional to 27,786.40, 38,320.39 and 20,250.29 is: 27,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,786.40 : 38,320.39 = 20,250.29 : x
  2. Step 2: Convert to fraction form
    27,786.40/38,320.39 = 20,250.29/x
  3. Step 3: Cross multiply
    27,786.40x = 38,320.39 × 20,250.29
  4. Step 4: Simplify right side
    27,786.40x = 775,999,131.53
  5. Step 5: Solve for x
    x = 775,999,131.53/27,786.40
  6. Step 6: Final answer
    x = 27,927.30

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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.