Home / 21,073.82-31,610.76-8,600.63

Finding the Fourth Proportional to 21,073.82, 31,610.76 and 8,600.63

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Solution

The fourth proportional to 21,073.82, 31,610.76 and 8,600.63 is: 12,900.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.82 : 31,610.76 = 8,600.63 : x
  2. Step 2: Convert to fraction form
    21,073.82/31,610.76 = 8,600.63/x
  3. Step 3: Cross multiply
    21,073.82x = 31,610.76 × 8,600.63
  4. Step 4: Simplify right side
    21,073.82x = 271,872,450.78
  5. Step 5: Solve for x
    x = 271,872,450.78/21,073.82
  6. Step 6: Final answer
    x = 12,900.96

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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.