Home / 40,845.60-61,262.40-12,759.12

Finding the Fourth Proportional to 40,845.60, 61,262.40 and 12,759.12

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Solution

The fourth proportional to 40,845.60, 61,262.40 and 12,759.12 is: 19,136.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,845.60 : 61,262.40 = 12,759.12 : x
  2. Step 2: Convert to fraction form
    40,845.60/61,262.40 = 12,759.12/x
  3. Step 3: Cross multiply
    40,845.60x = 61,262.40 × 12,759.12
  4. Step 4: Simplify right side
    40,845.60x = 781,654,313.09
  5. Step 5: Solve for x
    x = 781,654,313.09/40,845.60
  6. Step 6: Final answer
    x = 19,136.81

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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.