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Finding the Fourth Proportional to 18,703.71, 25,811.06 and 10,745.87

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Solution

The fourth proportional to 18,703.71, 25,811.06 and 10,745.87 is: 14,829.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.71 : 25,811.06 = 10,745.87 : x
  2. Step 2: Convert to fraction form
    18,703.71/25,811.06 = 10,745.87/x
  3. Step 3: Cross multiply
    18,703.71x = 25,811.06 × 10,745.87
  4. Step 4: Simplify right side
    18,703.71x = 277,362,112.54
  5. Step 5: Solve for x
    x = 277,362,112.54/18,703.71
  6. Step 6: Final answer
    x = 14,829.26

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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.