Home / 13,686.73-20,553.48-8,174.26

Finding the Fourth Proportional to 13,686.73, 20,553.48 and 8,174.26

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Solution

The fourth proportional to 13,686.73, 20,553.48 and 8,174.26 is: 12,275.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.73 : 20,553.48 = 8,174.26 : x
  2. Step 2: Convert to fraction form
    13,686.73/20,553.48 = 8,174.26/x
  3. Step 3: Cross multiply
    13,686.73x = 20,553.48 × 8,174.26
  4. Step 4: Simplify right side
    13,686.73x = 168,009,489.42
  5. Step 5: Solve for x
    x = 168,009,489.42/13,686.73
  6. Step 6: Final answer
    x = 12,275.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.