Home / 21,551.63-29,741.06-12,120.26

Finding the Fourth Proportional to 21,551.63, 29,741.06 and 12,120.26

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Solution

The fourth proportional to 21,551.63, 29,741.06 and 12,120.26 is: 16,725.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.63 : 29,741.06 = 12,120.26 : x
  2. Step 2: Convert to fraction form
    21,551.63/29,741.06 = 12,120.26/x
  3. Step 3: Cross multiply
    21,551.63x = 29,741.06 × 12,120.26
  4. Step 4: Simplify right side
    21,551.63x = 360,469,319.27
  5. Step 5: Solve for x
    x = 360,469,319.27/21,551.63
  6. Step 6: Final answer
    x = 16,725.85

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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.