Home / 21,021.40-31,493.70-17,104.60

Finding the Fourth Proportional to 21,021.40, 31,493.70 and 17,104.60

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Solution

The fourth proportional to 21,021.40, 31,493.70 and 17,104.60 is: 25,625.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.40 : 31,493.70 = 17,104.60 : x
  2. Step 2: Convert to fraction form
    21,021.40/31,493.70 = 17,104.60/x
  3. Step 3: Cross multiply
    21,021.40x = 31,493.70 × 17,104.60
  4. Step 4: Simplify right side
    21,021.40x = 538,687,141.02
  5. Step 5: Solve for x
    x = 538,687,141.02/21,021.40
  6. Step 6: Final answer
    x = 25,625.65

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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.