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Finding the Fourth Proportional to 15,174.50, 20,893.14 and 12,901.37

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Solution

The fourth proportional to 15,174.50, 20,893.14 and 12,901.37 is: 17,763.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.50 : 20,893.14 = 12,901.37 : x
  2. Step 2: Convert to fraction form
    15,174.50/20,893.14 = 12,901.37/x
  3. Step 3: Cross multiply
    15,174.50x = 20,893.14 × 12,901.37
  4. Step 4: Simplify right side
    15,174.50x = 269,550,025.14
  5. Step 5: Solve for x
    x = 269,550,025.14/15,174.50
  6. Step 6: Final answer
    x = 17,763.36

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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.