Home / 21,366.13-29,480.22-12,408.32

Finding the Fourth Proportional to 21,366.13, 29,480.22 and 12,408.32

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Solution

The fourth proportional to 21,366.13, 29,480.22 and 12,408.32 is: 17,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,366.13 : 29,480.22 = 12,408.32 : x
  2. Step 2: Convert to fraction form
    21,366.13/29,480.22 = 12,408.32/x
  3. Step 3: Cross multiply
    21,366.13x = 29,480.22 × 12,408.32
  4. Step 4: Simplify right side
    21,366.13x = 365,800,003.43
  5. Step 5: Solve for x
    x = 365,800,003.43/21,366.13
  6. Step 6: Final answer
    x = 17,120.55

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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.