Home / 13,917.76-19,207.72-7,631.36

Finding the Fourth Proportional to 13,917.76, 19,207.72 and 7,631.36

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Solution

The fourth proportional to 13,917.76, 19,207.72 and 7,631.36 is: 10,531.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.76 : 19,207.72 = 7,631.36 : x
  2. Step 2: Convert to fraction form
    13,917.76/19,207.72 = 7,631.36/x
  3. Step 3: Cross multiply
    13,917.76x = 19,207.72 × 7,631.36
  4. Step 4: Simplify right side
    13,917.76x = 146,581,026.10
  5. Step 5: Solve for x
    x = 146,581,026.10/13,917.76
  6. Step 6: Final answer
    x = 10,531.94

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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.