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Finding the Fourth Proportional to 18,129.96, 25,018.97 and 10,063.15

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Solution

The fourth proportional to 18,129.96, 25,018.97 and 10,063.15 is: 13,886.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.96 : 25,018.97 = 10,063.15 : x
  2. Step 2: Convert to fraction form
    18,129.96/25,018.97 = 10,063.15/x
  3. Step 3: Cross multiply
    18,129.96x = 25,018.97 × 10,063.15
  4. Step 4: Simplify right side
    18,129.96x = 251,769,535.09
  5. Step 5: Solve for x
    x = 251,769,535.09/18,129.96
  6. Step 6: Final answer
    x = 13,886.93

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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.