Home / 13,521.78-20,273.13-5,194.80

Finding the Fourth Proportional to 13,521.78, 20,273.13 and 5,194.80

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Solution

The fourth proportional to 13,521.78, 20,273.13 and 5,194.80 is: 7,788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.78 : 20,273.13 = 5,194.80 : x
  2. Step 2: Convert to fraction form
    13,521.78/20,273.13 = 5,194.80/x
  3. Step 3: Cross multiply
    13,521.78x = 20,273.13 × 5,194.80
  4. Step 4: Simplify right side
    13,521.78x = 105,314,855.72
  5. Step 5: Solve for x
    x = 105,314,855.72/13,521.78
  6. Step 6: Final answer
    x = 7,788.53

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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.