Home / 12,876.45-19,318.32-4,981.38

Finding the Fourth Proportional to 12,876.45, 19,318.32 and 4,981.38

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Solution

The fourth proportional to 12,876.45, 19,318.32 and 4,981.38 is: 7,473.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.45 : 19,318.32 = 4,981.38 : x
  2. Step 2: Convert to fraction form
    12,876.45/19,318.32 = 4,981.38/x
  3. Step 3: Cross multiply
    12,876.45x = 19,318.32 × 4,981.38
  4. Step 4: Simplify right side
    12,876.45x = 96,231,892.88
  5. Step 5: Solve for x
    x = 96,231,892.88/12,876.45
  6. Step 6: Final answer
    x = 7,473.48

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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.