Home / 20,109.25-30,162.65-9,012.96

Finding the Fourth Proportional to 20,109.25, 30,162.65 and 9,012.96

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Solution

The fourth proportional to 20,109.25, 30,162.65 and 9,012.96 is: 13,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.25 : 30,162.65 = 9,012.96 : x
  2. Step 2: Convert to fraction form
    20,109.25/30,162.65 = 9,012.96/x
  3. Step 3: Cross multiply
    20,109.25x = 30,162.65 × 9,012.96
  4. Step 4: Simplify right side
    20,109.25x = 271,854,712.88
  5. Step 5: Solve for x
    x = 271,854,712.88/20,109.25
  6. Step 6: Final answer
    x = 13,518.89

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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.