Home / 12,982.16-19,470.36-5,188.88

Finding the Fourth Proportional to 12,982.16, 19,470.36 and 5,188.88

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Solution

The fourth proportional to 12,982.16, 19,470.36 and 5,188.88 is: 7,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982.16 : 19,470.36 = 5,188.88 : x
  2. Step 2: Convert to fraction form
    12,982.16/19,470.36 = 5,188.88/x
  3. Step 3: Cross multiply
    12,982.16x = 19,470.36 × 5,188.88
  4. Step 4: Simplify right side
    12,982.16x = 101,029,361.60
  5. Step 5: Solve for x
    x = 101,029,361.60/12,982.16
  6. Step 6: Final answer
    x = 7,782.17

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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.