Home / 11,326.20-16,989.65-5,403.72

Finding the Fourth Proportional to 11,326.20, 16,989.65 and 5,403.72

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Solution

The fourth proportional to 11,326.20, 16,989.65 and 5,403.72 is: 8,105.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,326.20 : 16,989.65 = 5,403.72 : x
  2. Step 2: Convert to fraction form
    11,326.20/16,989.65 = 5,403.72/x
  3. Step 3: Cross multiply
    11,326.20x = 16,989.65 × 5,403.72
  4. Step 4: Simplify right side
    11,326.20x = 91,807,284.48
  5. Step 5: Solve for x
    x = 91,807,284.48/11,326.20
  6. Step 6: Final answer
    x = 8,105.74

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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.