Home / 11,711.10-16,160.67-8,911.74

Finding the Fourth Proportional to 11,711.10, 16,160.67 and 8,911.74

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Solution

The fourth proportional to 11,711.10, 16,160.67 and 8,911.74 is: 12,297.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.10 : 16,160.67 = 8,911.74 : x
  2. Step 2: Convert to fraction form
    11,711.10/16,160.67 = 8,911.74/x
  3. Step 3: Cross multiply
    11,711.10x = 16,160.67 × 8,911.74
  4. Step 4: Simplify right side
    11,711.10x = 144,019,689.27
  5. Step 5: Solve for x
    x = 144,019,689.27/11,711.10
  6. Step 6: Final answer
    x = 12,297.71

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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.