Home / 18,204.50-25,120.61-10,137.55

Finding the Fourth Proportional to 18,204.50, 25,120.61 and 10,137.55

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Solution

The fourth proportional to 18,204.50, 25,120.61 and 10,137.55 is: 13,988.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,204.50 : 25,120.61 = 10,137.55 : x
  2. Step 2: Convert to fraction form
    18,204.50/25,120.61 = 10,137.55/x
  3. Step 3: Cross multiply
    18,204.50x = 25,120.61 × 10,137.55
  4. Step 4: Simplify right side
    18,204.50x = 254,661,345.70
  5. Step 5: Solve for x
    x = 254,661,345.70/18,204.50
  6. Step 6: Final answer
    x = 13,988.92

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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.