Home / 21,037.20-31,512.60-10,654.80

Finding the Fourth Proportional to 21,037.20, 31,512.60 and 10,654.80

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Solution

The fourth proportional to 21,037.20, 31,512.60 and 10,654.80 is: 15,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,037.20 : 31,512.60 = 10,654.80 : x
  2. Step 2: Convert to fraction form
    21,037.20/31,512.60 = 10,654.80/x
  3. Step 3: Cross multiply
    21,037.20x = 31,512.60 × 10,654.80
  4. Step 4: Simplify right side
    21,037.20x = 335,760,450.48
  5. Step 5: Solve for x
    x = 335,760,450.48/21,037.20
  6. Step 6: Final answer
    x = 15,960.32

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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.