Home / 20,983.11-31,474.74-7,835.34

Finding the Fourth Proportional to 20,983.11, 31,474.74 and 7,835.34

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Solution

The fourth proportional to 20,983.11, 31,474.74 and 7,835.34 is: 11,753.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.11 : 31,474.74 = 7,835.34 : x
  2. Step 2: Convert to fraction form
    20,983.11/31,474.74 = 7,835.34/x
  3. Step 3: Cross multiply
    20,983.11x = 31,474.74 × 7,835.34
  4. Step 4: Simplify right side
    20,983.11x = 246,615,289.31
  5. Step 5: Solve for x
    x = 246,615,289.31/20,983.11
  6. Step 6: Final answer
    x = 11,753.04

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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.