Home / 20,999.13-31,511.97-19,028.76

Finding the Fourth Proportional to 20,999.13, 31,511.97 and 19,028.76

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Solution

The fourth proportional to 20,999.13, 31,511.97 and 19,028.76 is: 28,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.13 : 31,511.97 = 19,028.76 : x
  2. Step 2: Convert to fraction form
    20,999.13/31,511.97 = 19,028.76/x
  3. Step 3: Cross multiply
    20,999.13x = 31,511.97 × 19,028.76
  4. Step 4: Simplify right side
    20,999.13x = 599,633,714.26
  5. Step 5: Solve for x
    x = 599,633,714.26/20,999.13
  6. Step 6: Final answer
    x = 28,555.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.