Home / 19,917.36-29,876-5,125.04

Finding the Fourth Proportional to 19,917.36, 29,876 and 5,125.04

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Solution

The fourth proportional to 19,917.36, 29,876 and 5,125.04 is: 7,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.36 : 29,876 = 5,125.04 : x
  2. Step 2: Convert to fraction form
    19,917.36/29,876 = 5,125.04/x
  3. Step 3: Cross multiply
    19,917.36x = 29,876 × 5,125.04
  4. Step 4: Simplify right side
    19,917.36x = 153,115,695.04
  5. Step 5: Solve for x
    x = 153,115,695.04/19,917.36
  6. Step 6: Final answer
    x = 7,687.55

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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.