Home / 10,929.96-16,394.79-3,138.77

Finding the Fourth Proportional to 10,929.96, 16,394.79 and 3,138.77

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Solution

The fourth proportional to 10,929.96, 16,394.79 and 3,138.77 is: 4,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.96 : 16,394.79 = 3,138.77 : x
  2. Step 2: Convert to fraction form
    10,929.96/16,394.79 = 3,138.77/x
  3. Step 3: Cross multiply
    10,929.96x = 16,394.79 × 3,138.77
  4. Step 4: Simplify right side
    10,929.96x = 51,459,475.01
  5. Step 5: Solve for x
    x = 51,459,475.01/10,929.96
  6. Step 6: Final answer
    x = 4,708.11

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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.