Home / 43,815.80-65,766.90-21,654.20

Finding the Fourth Proportional to 43,815.80, 65,766.90 and 21,654.20

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Solution

The fourth proportional to 43,815.80, 65,766.90 and 21,654.20 is: 32,502.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,815.80 : 65,766.90 = 21,654.20 : x
  2. Step 2: Convert to fraction form
    43,815.80/65,766.90 = 21,654.20/x
  3. Step 3: Cross multiply
    43,815.80x = 65,766.90 × 21,654.20
  4. Step 4: Simplify right side
    43,815.80x = 1,424,129,605.98
  5. Step 5: Solve for x
    x = 1,424,129,605.98/43,815.80
  6. Step 6: Final answer
    x = 32,502.65

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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.