Home / 12,106.28-16,705.82-8,126.75

Finding the Fourth Proportional to 12,106.28, 16,705.82 and 8,126.75

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Solution

The fourth proportional to 12,106.28, 16,705.82 and 8,126.75 is: 11,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.28 : 16,705.82 = 8,126.75 : x
  2. Step 2: Convert to fraction form
    12,106.28/16,705.82 = 8,126.75/x
  3. Step 3: Cross multiply
    12,106.28x = 16,705.82 × 8,126.75
  4. Step 4: Simplify right side
    12,106.28x = 135,763,898.52
  5. Step 5: Solve for x
    x = 135,763,898.52/12,106.28
  6. Step 6: Final answer
    x = 11,214.34

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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.