Home / 18,198.28-25,113.36-10,239.88

Finding the Fourth Proportional to 18,198.28, 25,113.36 and 10,239.88

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Solution

The fourth proportional to 18,198.28, 25,113.36 and 10,239.88 is: 14,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.28 : 25,113.36 = 10,239.88 : x
  2. Step 2: Convert to fraction form
    18,198.28/25,113.36 = 10,239.88/x
  3. Step 3: Cross multiply
    18,198.28x = 25,113.36 × 10,239.88
  4. Step 4: Simplify right side
    18,198.28x = 257,157,792.80
  5. Step 5: Solve for x
    x = 257,157,792.80/18,198.28
  6. Step 6: Final answer
    x = 14,130.88

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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.