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Finding the Fourth Proportional to 18,392, 25,380.98 and 10,008.52

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Solution

The fourth proportional to 18,392, 25,380.98 and 10,008.52 is: 13,811.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392 : 25,380.98 = 10,008.52 : x
  2. Step 2: Convert to fraction form
    18,392/25,380.98 = 10,008.52/x
  3. Step 3: Cross multiply
    18,392x = 25,380.98 × 10,008.52
  4. Step 4: Simplify right side
    18,392x = 254,026,045.95
  5. Step 5: Solve for x
    x = 254,026,045.95/18,392
  6. Step 6: Final answer
    x = 13,811.77

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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.