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Finding the Fourth Proportional to 38,840.76, 58,259.64 and 11,138.76

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Solution

The fourth proportional to 38,840.76, 58,259.64 and 11,138.76 is: 16,707.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,840.76 : 58,259.64 = 11,138.76 : x
  2. Step 2: Convert to fraction form
    38,840.76/58,259.64 = 11,138.76/x
  3. Step 3: Cross multiply
    38,840.76x = 58,259.64 × 11,138.76
  4. Step 4: Simplify right side
    38,840.76x = 648,940,147.65
  5. Step 5: Solve for x
    x = 648,940,147.65/38,840.76
  6. Step 6: Final answer
    x = 16,707.71

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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.