Home / 15,722.40-23,556.24-13,121.76

Finding the Fourth Proportional to 15,722.40, 23,556.24 and 13,121.76

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Solution

The fourth proportional to 15,722.40, 23,556.24 and 13,121.76 is: 19,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.40 : 23,556.24 = 13,121.76 : x
  2. Step 2: Convert to fraction form
    15,722.40/23,556.24 = 13,121.76/x
  3. Step 3: Cross multiply
    15,722.40x = 23,556.24 × 13,121.76
  4. Step 4: Simplify right side
    15,722.40x = 309,099,327.78
  5. Step 5: Solve for x
    x = 309,099,327.78/15,722.40
  6. Step 6: Final answer
    x = 19,659.81

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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.