Home / 20,983.68-31,465.26-7,470.34

Finding the Fourth Proportional to 20,983.68, 31,465.26 and 7,470.34

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Solution

The fourth proportional to 20,983.68, 31,465.26 and 7,470.34 is: 11,201.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.68 : 31,465.26 = 7,470.34 : x
  2. Step 2: Convert to fraction form
    20,983.68/31,465.26 = 7,470.34/x
  3. Step 3: Cross multiply
    20,983.68x = 31,465.26 × 7,470.34
  4. Step 4: Simplify right side
    20,983.68x = 235,056,190.39
  5. Step 5: Solve for x
    x = 235,056,190.39/20,983.68
  6. Step 6: Final answer
    x = 11,201.86

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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.