Home / 20,703.04-31,067.28-8,220.88

Finding the Fourth Proportional to 20,703.04, 31,067.28 and 8,220.88

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Solution

The fourth proportional to 20,703.04, 31,067.28 and 8,220.88 is: 12,336.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.04 : 31,067.28 = 8,220.88 : x
  2. Step 2: Convert to fraction form
    20,703.04/31,067.28 = 8,220.88/x
  3. Step 3: Cross multiply
    20,703.04x = 31,067.28 × 8,220.88
  4. Step 4: Simplify right side
    20,703.04x = 255,400,380.81
  5. Step 5: Solve for x
    x = 255,400,380.81/20,703.04
  6. Step 6: Final answer
    x = 12,336.37

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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.