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Finding the Fourth Proportional to 43,653.48, 65,425.42 and 18,664.17

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Solution

The fourth proportional to 43,653.48, 65,425.42 and 18,664.17 is: 27,972.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,653.48 : 65,425.42 = 18,664.17 : x
  2. Step 2: Convert to fraction form
    43,653.48/65,425.42 = 18,664.17/x
  3. Step 3: Cross multiply
    43,653.48x = 65,425.42 × 18,664.17
  4. Step 4: Simplify right side
    43,653.48x = 1,221,111,161.20
  5. Step 5: Solve for x
    x = 1,221,111,161.20/43,653.48
  6. Step 6: Final answer
    x = 27,972.83

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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.