Home / 20,586.88-28,422.66-13,873.60

Finding the Fourth Proportional to 20,586.88, 28,422.66 and 13,873.60

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Solution

The fourth proportional to 20,586.88, 28,422.66 and 13,873.60 is: 19,154.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.88 : 28,422.66 = 13,873.60 : x
  2. Step 2: Convert to fraction form
    20,586.88/28,422.66 = 13,873.60/x
  3. Step 3: Cross multiply
    20,586.88x = 28,422.66 × 13,873.60
  4. Step 4: Simplify right side
    20,586.88x = 394,324,615.78
  5. Step 5: Solve for x
    x = 394,324,615.78/20,586.88
  6. Step 6: Final answer
    x = 19,154.17

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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.