Home / 20,103.88-30,155.58-9,708.36

Finding the Fourth Proportional to 20,103.88, 30,155.58 and 9,708.36

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Solution

The fourth proportional to 20,103.88, 30,155.58 and 9,708.36 is: 14,562.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,103.88 : 30,155.58 = 9,708.36 : x
  2. Step 2: Convert to fraction form
    20,103.88/30,155.58 = 9,708.36/x
  3. Step 3: Cross multiply
    20,103.88x = 30,155.58 × 9,708.36
  4. Step 4: Simplify right side
    20,103.88x = 292,761,226.65
  5. Step 5: Solve for x
    x = 292,761,226.65/20,103.88
  6. Step 6: Final answer
    x = 14,562.42

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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.