Home / 12,788.28-19,180.80-7,849.17

Finding the Fourth Proportional to 12,788.28, 19,180.80 and 7,849.17

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Solution

The fourth proportional to 12,788.28, 19,180.80 and 7,849.17 is: 11,772.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.28 : 19,180.80 = 7,849.17 : x
  2. Step 2: Convert to fraction form
    12,788.28/19,180.80 = 7,849.17/x
  3. Step 3: Cross multiply
    12,788.28x = 19,180.80 × 7,849.17
  4. Step 4: Simplify right side
    12,788.28x = 150,553,359.94
  5. Step 5: Solve for x
    x = 150,553,359.94/12,788.28
  6. Step 6: Final answer
    x = 11,772.76

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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.