Home / 12,991.46-19,484.39-4,107.48

Finding the Fourth Proportional to 12,991.46, 19,484.39 and 4,107.48

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Solution

The fourth proportional to 12,991.46, 19,484.39 and 4,107.48 is: 6,160.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.46 : 19,484.39 = 4,107.48 : x
  2. Step 2: Convert to fraction form
    12,991.46/19,484.39 = 4,107.48/x
  3. Step 3: Cross multiply
    12,991.46x = 19,484.39 × 4,107.48
  4. Step 4: Simplify right side
    12,991.46x = 80,031,721.70
  5. Step 5: Solve for x
    x = 80,031,721.70/12,991.46
  6. Step 6: Final answer
    x = 6,160.34

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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.