Home / 10,107.84-15,151.92-5,179.76

Finding the Fourth Proportional to 10,107.84, 15,151.92 and 5,179.76

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Solution

The fourth proportional to 10,107.84, 15,151.92 and 5,179.76 is: 7,764.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,107.84 : 15,151.92 = 5,179.76 : x
  2. Step 2: Convert to fraction form
    10,107.84/15,151.92 = 5,179.76/x
  3. Step 3: Cross multiply
    10,107.84x = 15,151.92 × 5,179.76
  4. Step 4: Simplify right side
    10,107.84x = 78,483,309.14
  5. Step 5: Solve for x
    x = 78,483,309.14/10,107.84
  6. Step 6: Final answer
    x = 7,764.60

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1.5x scale

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.