Home / 11,556.28-15,917.34-10,871.20

Finding the Fourth Proportional to 11,556.28, 15,917.34 and 10,871.20

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Solution

The fourth proportional to 11,556.28, 15,917.34 and 10,871.20 is: 14,973.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,556.28 : 15,917.34 = 10,871.20 : x
  2. Step 2: Convert to fraction form
    11,556.28/15,917.34 = 10,871.20/x
  3. Step 3: Cross multiply
    11,556.28x = 15,917.34 × 10,871.20
  4. Step 4: Simplify right side
    11,556.28x = 173,040,586.61
  5. Step 5: Solve for x
    x = 173,040,586.61/11,556.28
  6. Step 6: Final answer
    x = 14,973.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.