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Finding the Fourth Proportional to 38,169.76, 57,260.76 and 11,880.60

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Solution

The fourth proportional to 38,169.76, 57,260.76 and 11,880.60 is: 17,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,169.76 : 57,260.76 = 11,880.60 : x
  2. Step 2: Convert to fraction form
    38,169.76/57,260.76 = 11,880.60/x
  3. Step 3: Cross multiply
    38,169.76x = 57,260.76 × 11,880.60
  4. Step 4: Simplify right side
    38,169.76x = 680,292,185.26
  5. Step 5: Solve for x
    x = 680,292,185.26/38,169.76
  6. Step 6: Final answer
    x = 17,822.80

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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.