Home / 20,248.06-27,940.98-11,172.88

Finding the Fourth Proportional to 20,248.06, 27,940.98 and 11,172.88

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Solution

The fourth proportional to 20,248.06, 27,940.98 and 11,172.88 is: 15,417.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.06 : 27,940.98 = 11,172.88 : x
  2. Step 2: Convert to fraction form
    20,248.06/27,940.98 = 11,172.88/x
  3. Step 3: Cross multiply
    20,248.06x = 27,940.98 × 11,172.88
  4. Step 4: Simplify right side
    20,248.06x = 312,181,216.62
  5. Step 5: Solve for x
    x = 312,181,216.62/20,248.06
  6. Step 6: Final answer
    x = 15,417.83

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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.