Home / 20,894.62-31,347-12,015.63

Finding the Fourth Proportional to 20,894.62, 31,347 and 12,015.63

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Solution

The fourth proportional to 20,894.62, 31,347 and 12,015.63 is: 18,026.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.62 : 31,347 = 12,015.63 : x
  2. Step 2: Convert to fraction form
    20,894.62/31,347 = 12,015.63/x
  3. Step 3: Cross multiply
    20,894.62x = 31,347 × 12,015.63
  4. Step 4: Simplify right side
    20,894.62x = 376,653,909.53
  5. Step 5: Solve for x
    x = 376,653,909.53/20,894.62
  6. Step 6: Final answer
    x = 18,026.36

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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.