Home / 20,909.26-31,365.51-5,326.75

Finding the Fourth Proportional to 20,909.26, 31,365.51 and 5,326.75

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Solution

The fourth proportional to 20,909.26, 31,365.51 and 5,326.75 is: 7,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.26 : 31,365.51 = 5,326.75 : x
  2. Step 2: Convert to fraction form
    20,909.26/31,365.51 = 5,326.75/x
  3. Step 3: Cross multiply
    20,909.26x = 31,365.51 × 5,326.75
  4. Step 4: Simplify right side
    20,909.26x = 167,076,230.39
  5. Step 5: Solve for x
    x = 167,076,230.39/20,909.26
  6. Step 6: Final answer
    x = 7,990.54

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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.