Home / 11,711.48-16,162.04-6,406.80

Finding the Fourth Proportional to 11,711.48, 16,162.04 and 6,406.80

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Solution

The fourth proportional to 11,711.48, 16,162.04 and 6,406.80 is: 8,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.48 : 16,162.04 = 6,406.80 : x
  2. Step 2: Convert to fraction form
    11,711.48/16,162.04 = 6,406.80/x
  3. Step 3: Cross multiply
    11,711.48x = 16,162.04 × 6,406.80
  4. Step 4: Simplify right side
    11,711.48x = 103,546,957.87
  5. Step 5: Solve for x
    x = 103,546,957.87/11,711.48
  6. Step 6: Final answer
    x = 8,841.49

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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.