Home / 12,109.20-16,711.29-6,805.68

Finding the Fourth Proportional to 12,109.20, 16,711.29 and 6,805.68

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Solution

The fourth proportional to 12,109.20, 16,711.29 and 6,805.68 is: 9,392.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.20 : 16,711.29 = 6,805.68 : x
  2. Step 2: Convert to fraction form
    12,109.20/16,711.29 = 6,805.68/x
  3. Step 3: Cross multiply
    12,109.20x = 16,711.29 × 6,805.68
  4. Step 4: Simplify right side
    12,109.20x = 113,731,692.13
  5. Step 5: Solve for x
    x = 113,731,692.13/12,109.20
  6. Step 6: Final answer
    x = 9,392.17

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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.