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Finding the Fourth Proportional to 18,703.11, 25,811.28 and 10,745.85

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Solution

The fourth proportional to 18,703.11, 25,811.28 and 10,745.85 is: 14,829.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.11 : 25,811.28 = 10,745.85 : x
  2. Step 2: Convert to fraction form
    18,703.11/25,811.28 = 10,745.85/x
  3. Step 3: Cross multiply
    18,703.11x = 25,811.28 × 10,745.85
  4. Step 4: Simplify right side
    18,703.11x = 277,364,143.19
  5. Step 5: Solve for x
    x = 277,364,143.19/18,703.11
  6. Step 6: Final answer
    x = 14,829.84

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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.