Home / 21,087.20-31,630.80-5,504.82

Finding the Fourth Proportional to 21,087.20, 31,630.80 and 5,504.82

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Solution

The fourth proportional to 21,087.20, 31,630.80 and 5,504.82 is: 8,257.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.20 : 31,630.80 = 5,504.82 : x
  2. Step 2: Convert to fraction form
    21,087.20/31,630.80 = 5,504.82/x
  3. Step 3: Cross multiply
    21,087.20x = 31,630.80 × 5,504.82
  4. Step 4: Simplify right side
    21,087.20x = 174,121,846.69
  5. Step 5: Solve for x
    x = 174,121,846.69/21,087.20
  6. Step 6: Final answer
    x = 8,257.23

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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.