Home / 20,330.60-28,054.35-11,832.35

Finding the Fourth Proportional to 20,330.60, 28,054.35 and 11,832.35

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Solution

The fourth proportional to 20,330.60, 28,054.35 and 11,832.35 is: 16,327.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.60 : 28,054.35 = 11,832.35 : x
  2. Step 2: Convert to fraction form
    20,330.60/28,054.35 = 11,832.35/x
  3. Step 3: Cross multiply
    20,330.60x = 28,054.35 × 11,832.35
  4. Step 4: Simplify right side
    20,330.60x = 331,948,747.95
  5. Step 5: Solve for x
    x = 331,948,747.95/20,330.60
  6. Step 6: Final answer
    x = 16,327.55

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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.