Home / 20,671.98-31,012.26-10,808.58

Finding the Fourth Proportional to 20,671.98, 31,012.26 and 10,808.58

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Solution

The fourth proportional to 20,671.98, 31,012.26 and 10,808.58 is: 16,215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.98 : 31,012.26 = 10,808.58 : x
  2. Step 2: Convert to fraction form
    20,671.98/31,012.26 = 10,808.58/x
  3. Step 3: Cross multiply
    20,671.98x = 31,012.26 × 10,808.58
  4. Step 4: Simplify right side
    20,671.98x = 335,198,493.19
  5. Step 5: Solve for x
    x = 335,198,493.19/20,671.98
  6. Step 6: Final answer
    x = 16,215.11

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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.