Home / 20,609.22-28,440.72-11,656.53

Finding the Fourth Proportional to 20,609.22, 28,440.72 and 11,656.53

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Solution

The fourth proportional to 20,609.22, 28,440.72 and 11,656.53 is: 16,086.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.22 : 28,440.72 = 11,656.53 : x
  2. Step 2: Convert to fraction form
    20,609.22/28,440.72 = 11,656.53/x
  3. Step 3: Cross multiply
    20,609.22x = 28,440.72 × 11,656.53
  4. Step 4: Simplify right side
    20,609.22x = 331,520,135.04
  5. Step 5: Solve for x
    x = 331,520,135.04/20,609.22
  6. Step 6: Final answer
    x = 16,086.01

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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.