Home / 11,721.36-16,174.80-6,416.28

Finding the Fourth Proportional to 11,721.36, 16,174.80 and 6,416.28

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Solution

The fourth proportional to 11,721.36, 16,174.80 and 6,416.28 is: 8,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.36 : 16,174.80 = 6,416.28 : x
  2. Step 2: Convert to fraction form
    11,721.36/16,174.80 = 6,416.28/x
  3. Step 3: Cross multiply
    11,721.36x = 16,174.80 × 6,416.28
  4. Step 4: Simplify right side
    11,721.36x = 103,782,045.74
  5. Step 5: Solve for x
    x = 103,782,045.74/11,721.36
  6. Step 6: Final answer
    x = 8,854.10

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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.