Home / 15,999.20-22,078.40-8,926.82

Finding the Fourth Proportional to 15,999.20, 22,078.40 and 8,926.82

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Solution

The fourth proportional to 15,999.20, 22,078.40 and 8,926.82 is: 12,318.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.20 : 22,078.40 = 8,926.82 : x
  2. Step 2: Convert to fraction form
    15,999.20/22,078.40 = 8,926.82/x
  3. Step 3: Cross multiply
    15,999.20x = 22,078.40 × 8,926.82
  4. Step 4: Simplify right side
    15,999.20x = 197,089,902.69
  5. Step 5: Solve for x
    x = 197,089,902.69/15,999.20
  6. Step 6: Final answer
    x = 12,318.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.