Home / 19,388.12-26,736.36-12,311.96

Finding the Fourth Proportional to 19,388.12, 26,736.36 and 12,311.96

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Solution

The fourth proportional to 19,388.12, 26,736.36 and 12,311.96 is: 16,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.12 : 26,736.36 = 12,311.96 : x
  2. Step 2: Convert to fraction form
    19,388.12/26,736.36 = 12,311.96/x
  3. Step 3: Cross multiply
    19,388.12x = 26,736.36 × 12,311.96
  4. Step 4: Simplify right side
    19,388.12x = 329,176,994.87
  5. Step 5: Solve for x
    x = 329,176,994.87/19,388.12
  6. Step 6: Final answer
    x = 16,978.28

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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.