Home / 13,180.48-19,770.80-3,946.56

Finding the Fourth Proportional to 13,180.48, 19,770.80 and 3,946.56

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Solution

The fourth proportional to 13,180.48, 19,770.80 and 3,946.56 is: 5,919.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.48 : 19,770.80 = 3,946.56 : x
  2. Step 2: Convert to fraction form
    13,180.48/19,770.80 = 3,946.56/x
  3. Step 3: Cross multiply
    13,180.48x = 19,770.80 × 3,946.56
  4. Step 4: Simplify right side
    13,180.48x = 78,026,648.45
  5. Step 5: Solve for x
    x = 78,026,648.45/13,180.48
  6. Step 6: Final answer
    x = 5,919.86

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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.