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Finding the Fourth Proportional to 18,764.52, 25,895 and 10,381

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Solution

The fourth proportional to 18,764.52, 25,895 and 10,381 is: 14,325.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.52 : 25,895 = 10,381 : x
  2. Step 2: Convert to fraction form
    18,764.52/25,895 = 10,381/x
  3. Step 3: Cross multiply
    18,764.52x = 25,895 × 10,381
  4. Step 4: Simplify right side
    18,764.52x = 268,815,995
  5. Step 5: Solve for x
    x = 268,815,995/18,764.52
  6. Step 6: Final answer
    x = 14,325.76

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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.