Home / 13,976.82-19,287.05-8,311.28

Finding the Fourth Proportional to 13,976.82, 19,287.05 and 8,311.28

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Solution

The fourth proportional to 13,976.82, 19,287.05 and 8,311.28 is: 11,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,976.82 : 19,287.05 = 8,311.28 : x
  2. Step 2: Convert to fraction form
    13,976.82/19,287.05 = 8,311.28/x
  3. Step 3: Cross multiply
    13,976.82x = 19,287.05 × 8,311.28
  4. Step 4: Simplify right side
    13,976.82x = 160,299,934.93
  5. Step 5: Solve for x
    x = 160,299,934.93/13,976.82
  6. Step 6: Final answer
    x = 11,468.98

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1.5x scale

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.