Home / 13,195.20-18,204.30-7,889.16

Finding the Fourth Proportional to 13,195.20, 18,204.30 and 7,889.16

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Solution

The fourth proportional to 13,195.20, 18,204.30 and 7,889.16 is: 10,884.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.20 : 18,204.30 = 7,889.16 : x
  2. Step 2: Convert to fraction form
    13,195.20/18,204.30 = 7,889.16/x
  3. Step 3: Cross multiply
    13,195.20x = 18,204.30 × 7,889.16
  4. Step 4: Simplify right side
    13,195.20x = 143,616,635.39
  5. Step 5: Solve for x
    x = 143,616,635.39/13,195.20
  6. Step 6: Final answer
    x = 10,884.01

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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.