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Finding the Fourth Proportional to 43,500.60, 65,260.61 and 13,920.21

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Solution

The fourth proportional to 43,500.60, 65,260.61 and 13,920.21 is: 20,883.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,500.60 : 65,260.61 = 13,920.21 : x
  2. Step 2: Convert to fraction form
    43,500.60/65,260.61 = 13,920.21/x
  3. Step 3: Cross multiply
    43,500.60x = 65,260.61 × 13,920.21
  4. Step 4: Simplify right side
    43,500.60x = 908,441,326.33
  5. Step 5: Solve for x
    x = 908,441,326.33/43,500.60
  6. Step 6: Final answer
    x = 20,883.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.