Home / 11,755.21-16,223.35-6,720.16

Finding the Fourth Proportional to 11,755.21, 16,223.35 and 6,720.16

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Solution

The fourth proportional to 11,755.21, 16,223.35 and 6,720.16 is: 9,274.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,755.21 : 16,223.35 = 6,720.16 : x
  2. Step 2: Convert to fraction form
    11,755.21/16,223.35 = 6,720.16/x
  3. Step 3: Cross multiply
    11,755.21x = 16,223.35 × 6,720.16
  4. Step 4: Simplify right side
    11,755.21x = 109,023,494.48
  5. Step 5: Solve for x
    x = 109,023,494.48/11,755.21
  6. Step 6: Final answer
    x = 9,274.48

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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.