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Finding the Fourth Proportional to 18,392.87, 25,382.65 and 10,009.37

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Solution

The fourth proportional to 18,392.87, 25,382.65 and 10,009.37 is: 13,813.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.87 : 25,382.65 = 10,009.37 : x
  2. Step 2: Convert to fraction form
    18,392.87/25,382.65 = 10,009.37/x
  3. Step 3: Cross multiply
    18,392.87x = 25,382.65 × 10,009.37
  4. Step 4: Simplify right side
    18,392.87x = 254,064,208.52
  5. Step 5: Solve for x
    x = 254,064,208.52/18,392.87
  6. Step 6: Final answer
    x = 13,813.19

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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.