Home / 13,561.20-20,366.10-9,867.60

Finding the Fourth Proportional to 13,561.20, 20,366.10 and 9,867.60

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Solution

The fourth proportional to 13,561.20, 20,366.10 and 9,867.60 is: 14,819.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.20 : 20,366.10 = 9,867.60 : x
  2. Step 2: Convert to fraction form
    13,561.20/20,366.10 = 9,867.60/x
  3. Step 3: Cross multiply
    13,561.20x = 20,366.10 × 9,867.60
  4. Step 4: Simplify right side
    13,561.20x = 200,964,528.36
  5. Step 5: Solve for x
    x = 200,964,528.36/13,561.20
  6. Step 6: Final answer
    x = 14,819.08

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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.