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Finding the Fourth Proportional to 14,507.96, 20,023.97 and 8,221.55

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Solution

The fourth proportional to 14,507.96, 20,023.97 and 8,221.55 is: 11,347.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,507.96 : 20,023.97 = 8,221.55 : x
  2. Step 2: Convert to fraction form
    14,507.96/20,023.97 = 8,221.55/x
  3. Step 3: Cross multiply
    14,507.96x = 20,023.97 × 8,221.55
  4. Step 4: Simplify right side
    14,507.96x = 164,627,929.33
  5. Step 5: Solve for x
    x = 164,627,929.33/14,507.96
  6. Step 6: Final answer
    x = 11,347.42

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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.