Home / 11,721.89-16,176.21-6,416.71

Finding the Fourth Proportional to 11,721.89, 16,176.21 and 6,416.71

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Solution

The fourth proportional to 11,721.89, 16,176.21 and 6,416.71 is: 8,855.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.89 : 16,176.21 = 6,416.71 : x
  2. Step 2: Convert to fraction form
    11,721.89/16,176.21 = 6,416.71/x
  3. Step 3: Cross multiply
    11,721.89x = 16,176.21 × 6,416.71
  4. Step 4: Simplify right side
    11,721.89x = 103,798,048.47
  5. Step 5: Solve for x
    x = 103,798,048.47/11,721.89
  6. Step 6: Final answer
    x = 8,855.06

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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.