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Finding the Fourth Proportional to 36,687.42, 55,055.80 and 12,994.89

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Solution

The fourth proportional to 36,687.42, 55,055.80 and 12,994.89 is: 19,501.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,687.42 : 55,055.80 = 12,994.89 : x
  2. Step 2: Convert to fraction form
    36,687.42/55,055.80 = 12,994.89/x
  3. Step 3: Cross multiply
    36,687.42x = 55,055.80 × 12,994.89
  4. Step 4: Simplify right side
    36,687.42x = 715,444,081.11
  5. Step 5: Solve for x
    x = 715,444,081.11/36,687.42
  6. Step 6: Final answer
    x = 19,501.07

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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.