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Finding the Fourth Proportional to 36,840.60, 55,260.90 and 9,138.60

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Solution

The fourth proportional to 36,840.60, 55,260.90 and 9,138.60 is: 13,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,840.60 : 55,260.90 = 9,138.60 : x
  2. Step 2: Convert to fraction form
    36,840.60/55,260.90 = 9,138.60/x
  3. Step 3: Cross multiply
    36,840.60x = 55,260.90 × 9,138.60
  4. Step 4: Simplify right side
    36,840.60x = 505,007,260.74
  5. Step 5: Solve for x
    x = 505,007,260.74/36,840.60
  6. Step 6: Final answer
    x = 13,707.90

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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.