Home / 11,721.69-16,175.90-6,416.46

Finding the Fourth Proportional to 11,721.69, 16,175.90 and 6,416.46

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Solution

The fourth proportional to 11,721.69, 16,175.90 and 6,416.46 is: 8,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.69 : 16,175.90 = 6,416.46 : x
  2. Step 2: Convert to fraction form
    11,721.69/16,175.90 = 6,416.46/x
  3. Step 3: Cross multiply
    11,721.69x = 16,175.90 × 6,416.46
  4. Step 4: Simplify right side
    11,721.69x = 103,792,031.36
  5. Step 5: Solve for x
    x = 103,792,031.36/11,721.69
  6. Step 6: Final answer
    x = 8,854.70

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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.