Home / 20,614.28-28,447.62-11,182.60

Finding the Fourth Proportional to 20,614.28, 28,447.62 and 11,182.60

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Solution

The fourth proportional to 20,614.28, 28,447.62 and 11,182.60 is: 15,431.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.28 : 28,447.62 = 11,182.60 : x
  2. Step 2: Convert to fraction form
    20,614.28/28,447.62 = 11,182.60/x
  3. Step 3: Cross multiply
    20,614.28x = 28,447.62 × 11,182.60
  4. Step 4: Simplify right side
    20,614.28x = 318,118,355.41
  5. Step 5: Solve for x
    x = 318,118,355.41/20,614.28
  6. Step 6: Final answer
    x = 15,431.94

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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.