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Finding the Fourth Proportional to 12,659.93, 18,984.13 and 5,259.98

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Solution

The fourth proportional to 12,659.93, 18,984.13 and 5,259.98 is: 7,887.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.93 : 18,984.13 = 5,259.98 : x
  2. Step 2: Convert to fraction form
    12,659.93/18,984.13 = 5,259.98/x
  3. Step 3: Cross multiply
    12,659.93x = 18,984.13 × 5,259.98
  4. Step 4: Simplify right side
    12,659.93x = 99,856,022.90
  5. Step 5: Solve for x
    x = 99,856,022.90/12,659.93
  6. Step 6: Final answer
    x = 7,887.57

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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.