Home / 15,194.75-20,969.58-8,909.15

Finding the Fourth Proportional to 15,194.75, 20,969.58 and 8,909.15

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Solution

The fourth proportional to 15,194.75, 20,969.58 and 8,909.15 is: 12,295.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.75 : 20,969.58 = 8,909.15 : x
  2. Step 2: Convert to fraction form
    15,194.75/20,969.58 = 8,909.15/x
  3. Step 3: Cross multiply
    15,194.75x = 20,969.58 × 8,909.15
  4. Step 4: Simplify right side
    15,194.75x = 186,821,133.66
  5. Step 5: Solve for x
    x = 186,821,133.66/15,194.75
  6. Step 6: Final answer
    x = 12,295.11

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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.