Home / 16,481.75-22,718.21-12,890.34

Finding the Fourth Proportional to 16,481.75, 22,718.21 and 12,890.34

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Solution

The fourth proportional to 16,481.75, 22,718.21 and 12,890.34 is: 17,767.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,481.75 : 22,718.21 = 12,890.34 : x
  2. Step 2: Convert to fraction form
    16,481.75/22,718.21 = 12,890.34/x
  3. Step 3: Cross multiply
    16,481.75x = 22,718.21 × 12,890.34
  4. Step 4: Simplify right side
    16,481.75x = 292,845,386.64
  5. Step 5: Solve for x
    x = 292,845,386.64/16,481.75
  6. Step 6: Final answer
    x = 17,767.86

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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.