Home / 43,613.12-65,403.81-18,654.99

Finding the Fourth Proportional to 43,613.12, 65,403.81 and 18,654.99

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Solution

The fourth proportional to 43,613.12, 65,403.81 and 18,654.99 is: 27,975.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,613.12 : 65,403.81 = 18,654.99 : x
  2. Step 2: Convert to fraction form
    43,613.12/65,403.81 = 18,654.99/x
  3. Step 3: Cross multiply
    43,613.12x = 65,403.81 × 18,654.99
  4. Step 4: Simplify right side
    43,613.12x = 1,220,107,421.51
  5. Step 5: Solve for x
    x = 1,220,107,421.51/43,613.12
  6. Step 6: Final answer
    x = 27,975.70

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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.