Home / 21,162.87-29,196.45-14,787.77

Finding the Fourth Proportional to 21,162.87, 29,196.45 and 14,787.77

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Solution

The fourth proportional to 21,162.87, 29,196.45 and 14,787.77 is: 20,401.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.87 : 29,196.45 = 14,787.77 : x
  2. Step 2: Convert to fraction form
    21,162.87/29,196.45 = 14,787.77/x
  3. Step 3: Cross multiply
    21,162.87x = 29,196.45 × 14,787.77
  4. Step 4: Simplify right side
    21,162.87x = 431,750,241.43
  5. Step 5: Solve for x
    x = 431,750,241.43/21,162.87
  6. Step 6: Final answer
    x = 20,401.31

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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.