Home / 27,982.87-38,619.15-20,896.99

Finding the Fourth Proportional to 27,982.87, 38,619.15 and 20,896.99

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Solution

The fourth proportional to 27,982.87, 38,619.15 and 20,896.99 is: 28,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,982.87 : 38,619.15 = 20,896.99 : x
  2. Step 2: Convert to fraction form
    27,982.87/38,619.15 = 20,896.99/x
  3. Step 3: Cross multiply
    27,982.87x = 38,619.15 × 20,896.99
  4. Step 4: Simplify right side
    27,982.87x = 807,023,816.45
  5. Step 5: Solve for x
    x = 807,023,816.45/27,982.87
  6. Step 6: Final answer
    x = 28,839.93

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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.