Home / 13,644.48-20,360.31-12,173.52

Finding the Fourth Proportional to 13,644.48, 20,360.31 and 12,173.52

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Solution

The fourth proportional to 13,644.48, 20,360.31 and 12,173.52 is: 18,165.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.48 : 20,360.31 = 12,173.52 : x
  2. Step 2: Convert to fraction form
    13,644.48/20,360.31 = 12,173.52/x
  3. Step 3: Cross multiply
    13,644.48x = 20,360.31 × 12,173.52
  4. Step 4: Simplify right side
    13,644.48x = 247,856,640.99
  5. Step 5: Solve for x
    x = 247,856,640.99/13,644.48
  6. Step 6: Final answer
    x = 18,165.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.