Home / 21,131.08-29,160.91-11,699.44

Finding the Fourth Proportional to 21,131.08, 29,160.91 and 11,699.44

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Solution

The fourth proportional to 21,131.08, 29,160.91 and 11,699.44 is: 16,145.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.08 : 29,160.91 = 11,699.44 : x
  2. Step 2: Convert to fraction form
    21,131.08/29,160.91 = 11,699.44/x
  3. Step 3: Cross multiply
    21,131.08x = 29,160.91 × 11,699.44
  4. Step 4: Simplify right side
    21,131.08x = 341,166,258.61
  5. Step 5: Solve for x
    x = 341,166,258.61/21,131.08
  6. Step 6: Final answer
    x = 16,145.24

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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.