Home / 13,919.32-19,208.62-7,631.70

Finding the Fourth Proportional to 13,919.32, 19,208.62 and 7,631.70

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Solution

The fourth proportional to 13,919.32, 19,208.62 and 7,631.70 is: 10,531.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.32 : 19,208.62 = 7,631.70 : x
  2. Step 2: Convert to fraction form
    13,919.32/19,208.62 = 7,631.70/x
  3. Step 3: Cross multiply
    13,919.32x = 19,208.62 × 7,631.70
  4. Step 4: Simplify right side
    13,919.32x = 146,594,425.25
  5. Step 5: Solve for x
    x = 146,594,425.25/13,919.32
  6. Step 6: Final answer
    x = 10,531.72

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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.