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Finding the Fourth Proportional to 18,117.87, 25,003.94 and 10,054.11

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Solution

The fourth proportional to 18,117.87, 25,003.94 and 10,054.11 is: 13,875.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.87 : 25,003.94 = 10,054.11 : x
  2. Step 2: Convert to fraction form
    18,117.87/25,003.94 = 10,054.11/x
  3. Step 3: Cross multiply
    18,117.87x = 25,003.94 × 10,054.11
  4. Step 4: Simplify right side
    18,117.87x = 251,392,325.82
  5. Step 5: Solve for x
    x = 251,392,325.82/18,117.87
  6. Step 6: Final answer
    x = 13,875.38

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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.