Home / 43,890.43-65,842.14-12,721.63

Finding the Fourth Proportional to 43,890.43, 65,842.14 and 12,721.63

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Solution

The fourth proportional to 43,890.43, 65,842.14 and 12,721.63 is: 19,084.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,890.43 : 65,842.14 = 12,721.63 : x
  2. Step 2: Convert to fraction form
    43,890.43/65,842.14 = 12,721.63/x
  3. Step 3: Cross multiply
    43,890.43x = 65,842.14 × 12,721.63
  4. Step 4: Simplify right side
    43,890.43x = 837,619,343.49
  5. Step 5: Solve for x
    x = 837,619,343.49/43,890.43
  6. Step 6: Final answer
    x = 19,084.33

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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.