Home / 18,131.10-25,019.67-10,172.70

Finding the Fourth Proportional to 18,131.10, 25,019.67 and 10,172.70

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Solution

The fourth proportional to 18,131.10, 25,019.67 and 10,172.70 is: 14,037.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.10 : 25,019.67 = 10,172.70 : x
  2. Step 2: Convert to fraction form
    18,131.10/25,019.67 = 10,172.70/x
  3. Step 3: Cross multiply
    18,131.10x = 25,019.67 × 10,172.70
  4. Step 4: Simplify right side
    18,131.10x = 254,517,597.01
  5. Step 5: Solve for x
    x = 254,517,597.01/18,131.10
  6. Step 6: Final answer
    x = 14,037.63

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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.