Home / 21,627.80-29,846.58-12,680.60

Finding the Fourth Proportional to 21,627.80, 29,846.58 and 12,680.60

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Solution

The fourth proportional to 21,627.80, 29,846.58 and 12,680.60 is: 17,499.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.80 : 29,846.58 = 12,680.60 : x
  2. Step 2: Convert to fraction form
    21,627.80/29,846.58 = 12,680.60/x
  3. Step 3: Cross multiply
    21,627.80x = 29,846.58 × 12,680.60
  4. Step 4: Simplify right side
    21,627.80x = 378,472,542.35
  5. Step 5: Solve for x
    x = 378,472,542.35/21,627.80
  6. Step 6: Final answer
    x = 17,499.35

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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.