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Finding the Fourth Proportional to 18,808.32, 25,956 and 11,352

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Solution

The fourth proportional to 18,808.32, 25,956 and 11,352 is: 15,666.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.32 : 25,956 = 11,352 : x
  2. Step 2: Convert to fraction form
    18,808.32/25,956 = 11,352/x
  3. Step 3: Cross multiply
    18,808.32x = 25,956 × 11,352
  4. Step 4: Simplify right side
    18,808.32x = 294,652,512
  5. Step 5: Solve for x
    x = 294,652,512/18,808.32
  6. Step 6: Final answer
    x = 15,666.07

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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.