Home / 19,917.69-29,876.32-5,126.55

Finding the Fourth Proportional to 19,917.69, 29,876.32 and 5,126.55

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Solution

The fourth proportional to 19,917.69, 29,876.32 and 5,126.55 is: 7,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.69 : 29,876.32 = 5,126.55 : x
  2. Step 2: Convert to fraction form
    19,917.69/29,876.32 = 5,126.55/x
  3. Step 3: Cross multiply
    19,917.69x = 29,876.32 × 5,126.55
  4. Step 4: Simplify right side
    19,917.69x = 153,162,448.30
  5. Step 5: Solve for x
    x = 153,162,448.30/19,917.69
  6. Step 6: Final answer
    x = 7,689.77

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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.