Home / 11,909.17-16,435.64-6,605.70

Finding the Fourth Proportional to 11,909.17, 16,435.64 and 6,605.70

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Solution

The fourth proportional to 11,909.17, 16,435.64 and 6,605.70 is: 9,116.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,909.17 : 16,435.64 = 6,605.70 : x
  2. Step 2: Convert to fraction form
    11,909.17/16,435.64 = 6,605.70/x
  3. Step 3: Cross multiply
    11,909.17x = 16,435.64 × 6,605.70
  4. Step 4: Simplify right side
    11,909.17x = 108,568,907.15
  5. Step 5: Solve for x
    x = 108,568,907.15/11,909.17
  6. Step 6: Final answer
    x = 9,116.41

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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.