Home / 20,848.18-31,278.12-8,376.96

Finding the Fourth Proportional to 20,848.18, 31,278.12 and 8,376.96

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Solution

The fourth proportional to 20,848.18, 31,278.12 and 8,376.96 is: 12,567.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.18 : 31,278.12 = 8,376.96 : x
  2. Step 2: Convert to fraction form
    20,848.18/31,278.12 = 8,376.96/x
  3. Step 3: Cross multiply
    20,848.18x = 31,278.12 × 8,376.96
  4. Step 4: Simplify right side
    20,848.18x = 262,015,560.12
  5. Step 5: Solve for x
    x = 262,015,560.12/20,848.18
  6. Step 6: Final answer
    x = 12,567.79

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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.