Home / 12,101.40-16,703.21-8,517.15

Finding the Fourth Proportional to 12,101.40, 16,703.21 and 8,517.15

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Solution

The fourth proportional to 12,101.40, 16,703.21 and 8,517.15 is: 11,755.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.40 : 16,703.21 = 8,517.15 : x
  2. Step 2: Convert to fraction form
    12,101.40/16,703.21 = 8,517.15/x
  3. Step 3: Cross multiply
    12,101.40x = 16,703.21 × 8,517.15
  4. Step 4: Simplify right side
    12,101.40x = 142,263,766.34
  5. Step 5: Solve for x
    x = 142,263,766.34/12,101.40
  6. Step 6: Final answer
    x = 11,755.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.