Home / 20,976.04-31,474.95-19,765.90

Finding the Fourth Proportional to 20,976.04, 31,474.95 and 19,765.90

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Solution

The fourth proportional to 20,976.04, 31,474.95 and 19,765.90 is: 29,659.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.04 : 31,474.95 = 19,765.90 : x
  2. Step 2: Convert to fraction form
    20,976.04/31,474.95 = 19,765.90/x
  3. Step 3: Cross multiply
    20,976.04x = 31,474.95 × 19,765.90
  4. Step 4: Simplify right side
    20,976.04x = 622,130,714.21
  5. Step 5: Solve for x
    x = 622,130,714.21/20,976.04
  6. Step 6: Final answer
    x = 29,659.11

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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.