Home / 15,086.80-20,824.56-8,800.36

Finding the Fourth Proportional to 15,086.80, 20,824.56 and 8,800.36

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Solution

The fourth proportional to 15,086.80, 20,824.56 and 8,800.36 is: 12,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.80 : 20,824.56 = 8,800.36 : x
  2. Step 2: Convert to fraction form
    15,086.80/20,824.56 = 8,800.36/x
  3. Step 3: Cross multiply
    15,086.80x = 20,824.56 × 8,800.36
  4. Step 4: Simplify right side
    15,086.80x = 183,263,624.84
  5. Step 5: Solve for x
    x = 183,263,624.84/15,086.80
  6. Step 6: Final answer
    x = 12,147.28

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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.