Home / 21,102.22-29,120.11-12,150.01

Finding the Fourth Proportional to 21,102.22, 29,120.11 and 12,150.01

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Solution

The fourth proportional to 21,102.22, 29,120.11 and 12,150.01 is: 16,766.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.22 : 29,120.11 = 12,150.01 : x
  2. Step 2: Convert to fraction form
    21,102.22/29,120.11 = 12,150.01/x
  3. Step 3: Cross multiply
    21,102.22x = 29,120.11 × 12,150.01
  4. Step 4: Simplify right side
    21,102.22x = 353,809,627.70
  5. Step 5: Solve for x
    x = 353,809,627.70/21,102.22
  6. Step 6: Final answer
    x = 16,766.46

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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.