Home / 13,931.60-20,906.07-8,676.93

Finding the Fourth Proportional to 13,931.60, 20,906.07 and 8,676.93

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Solution

The fourth proportional to 13,931.60, 20,906.07 and 8,676.93 is: 13,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.60 : 20,906.07 = 8,676.93 : x
  2. Step 2: Convert to fraction form
    13,931.60/20,906.07 = 8,676.93/x
  3. Step 3: Cross multiply
    13,931.60x = 20,906.07 × 8,676.93
  4. Step 4: Simplify right side
    13,931.60x = 181,400,505.97
  5. Step 5: Solve for x
    x = 181,400,505.97/13,931.60
  6. Step 6: Final answer
    x = 13,020.80

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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.