Home / 11,674.89-16,111.80-6,639.57

Finding the Fourth Proportional to 11,674.89, 16,111.80 and 6,639.57

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Solution

The fourth proportional to 11,674.89, 16,111.80 and 6,639.57 is: 9,162.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,674.89 : 16,111.80 = 6,639.57 : x
  2. Step 2: Convert to fraction form
    11,674.89/16,111.80 = 6,639.57/x
  3. Step 3: Cross multiply
    11,674.89x = 16,111.80 × 6,639.57
  4. Step 4: Simplify right side
    11,674.89x = 106,975,423.93
  5. Step 5: Solve for x
    x = 106,975,423.93/11,674.89
  6. Step 6: Final answer
    x = 9,162.86

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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.