Home / 21,126.96-29,153.52-11,695.32

Finding the Fourth Proportional to 21,126.96, 29,153.52 and 11,695.32

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Solution

The fourth proportional to 21,126.96, 29,153.52 and 11,695.32 is: 16,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.96 : 29,153.52 = 11,695.32 : x
  2. Step 2: Convert to fraction form
    21,126.96/29,153.52 = 11,695.32/x
  3. Step 3: Cross multiply
    21,126.96x = 29,153.52 × 11,695.32
  4. Step 4: Simplify right side
    21,126.96x = 340,959,745.53
  5. Step 5: Solve for x
    x = 340,959,745.53/21,126.96
  6. Step 6: Final answer
    x = 16,138.61

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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.