Home / 11,711.12-16,161.16-6,405.84

Finding the Fourth Proportional to 11,711.12, 16,161.16 and 6,405.84

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Solution

The fourth proportional to 11,711.12, 16,161.16 and 6,405.84 is: 8,839.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.12 : 16,161.16 = 6,405.84 : x
  2. Step 2: Convert to fraction form
    11,711.12/16,161.16 = 6,405.84/x
  3. Step 3: Cross multiply
    11,711.12x = 16,161.16 × 6,405.84
  4. Step 4: Simplify right side
    11,711.12x = 103,525,805.17
  5. Step 5: Solve for x
    x = 103,525,805.17/11,711.12
  6. Step 6: Final answer
    x = 8,839.96

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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.