Home / 18,199.26-25,116.03-12,139.02

Finding the Fourth Proportional to 18,199.26, 25,116.03 and 12,139.02

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Solution

The fourth proportional to 18,199.26, 25,116.03 and 12,139.02 is: 16,752.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,199.26 : 25,116.03 = 12,139.02 : x
  2. Step 2: Convert to fraction form
    18,199.26/25,116.03 = 12,139.02/x
  3. Step 3: Cross multiply
    18,199.26x = 25,116.03 × 12,139.02
  4. Step 4: Simplify right side
    18,199.26x = 304,883,990.49
  5. Step 5: Solve for x
    x = 304,883,990.49/18,199.26
  6. Step 6: Final answer
    x = 16,752.55

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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.