Home / 12,101.20-16,701.60-11,310.64

Finding the Fourth Proportional to 12,101.20, 16,701.60 and 11,310.64

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Solution

The fourth proportional to 12,101.20, 16,701.60 and 11,310.64 is: 15,610.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.20 : 16,701.60 = 11,310.64 : x
  2. Step 2: Convert to fraction form
    12,101.20/16,701.60 = 11,310.64/x
  3. Step 3: Cross multiply
    12,101.20x = 16,701.60 × 11,310.64
  4. Step 4: Simplify right side
    12,101.20x = 188,905,785.02
  5. Step 5: Solve for x
    x = 188,905,785.02/12,101.20
  6. Step 6: Final answer
    x = 15,610.50

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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.