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Finding the Fourth Proportional to 18,172.91, 25,079.33 and 10,215.11

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Solution

The fourth proportional to 18,172.91, 25,079.33 and 10,215.11 is: 14,097.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.91 : 25,079.33 = 10,215.11 : x
  2. Step 2: Convert to fraction form
    18,172.91/25,079.33 = 10,215.11/x
  3. Step 3: Cross multiply
    18,172.91x = 25,079.33 × 10,215.11
  4. Step 4: Simplify right side
    18,172.91x = 256,188,114.68
  5. Step 5: Solve for x
    x = 256,188,114.68/18,172.91
  6. Step 6: Final answer
    x = 14,097.25

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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.