Home / 11,721.53-16,176.16-6,686.57

Finding the Fourth Proportional to 11,721.53, 16,176.16 and 6,686.57

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Solution

The fourth proportional to 11,721.53, 16,176.16 and 6,686.57 is: 9,227.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.53 : 16,176.16 = 6,686.57 : x
  2. Step 2: Convert to fraction form
    11,721.53/16,176.16 = 6,686.57/x
  3. Step 3: Cross multiply
    11,721.53x = 16,176.16 × 6,686.57
  4. Step 4: Simplify right side
    11,721.53x = 108,163,074.97
  5. Step 5: Solve for x
    x = 108,163,074.97/11,721.53
  6. Step 6: Final answer
    x = 9,227.72

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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.