Home / 21,085.88-31,620.11-8,597.43

Finding the Fourth Proportional to 21,085.88, 31,620.11 and 8,597.43

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Solution

The fourth proportional to 21,085.88, 31,620.11 and 8,597.43 is: 12,892.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.88 : 31,620.11 = 8,597.43 : x
  2. Step 2: Convert to fraction form
    21,085.88/31,620.11 = 8,597.43/x
  3. Step 3: Cross multiply
    21,085.88x = 31,620.11 × 8,597.43
  4. Step 4: Simplify right side
    21,085.88x = 271,851,639.33
  5. Step 5: Solve for x
    x = 271,851,639.33/21,085.88
  6. Step 6: Final answer
    x = 12,892.59

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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.