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Finding the Fourth Proportional to 12,636.56, 18,971.27 and 9,716.92

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Solution

The fourth proportional to 12,636.56, 18,971.27 and 9,716.92 is: 14,588.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.56 : 18,971.27 = 9,716.92 : x
  2. Step 2: Convert to fraction form
    12,636.56/18,971.27 = 9,716.92/x
  3. Step 3: Cross multiply
    12,636.56x = 18,971.27 × 9,716.92
  4. Step 4: Simplify right side
    12,636.56x = 184,342,312.89
  5. Step 5: Solve for x
    x = 184,342,312.89/12,636.56
  6. Step 6: Final answer
    x = 14,588.01

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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.