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Finding the Fourth Proportional to 18,129.17, 25,018.08 and 10,171.22

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Solution

The fourth proportional to 18,129.17, 25,018.08 and 10,171.22 is: 14,036.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.17 : 25,018.08 = 10,171.22 : x
  2. Step 2: Convert to fraction form
    18,129.17/25,018.08 = 10,171.22/x
  3. Step 3: Cross multiply
    18,129.17x = 25,018.08 × 10,171.22
  4. Step 4: Simplify right side
    18,129.17x = 254,464,395.66
  5. Step 5: Solve for x
    x = 254,464,395.66/18,129.17
  6. Step 6: Final answer
    x = 14,036.19

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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.