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Finding the Fourth Proportional to 36,912.86, 55,369.50 and 9,210.86

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Solution

The fourth proportional to 36,912.86, 55,369.50 and 9,210.86 is: 13,816.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,912.86 : 55,369.50 = 9,210.86 : x
  2. Step 2: Convert to fraction form
    36,912.86/55,369.50 = 9,210.86/x
  3. Step 3: Cross multiply
    36,912.86x = 55,369.50 × 9,210.86
  4. Step 4: Simplify right side
    36,912.86x = 510,000,712.77
  5. Step 5: Solve for x
    x = 510,000,712.77/36,912.86
  6. Step 6: Final answer
    x = 13,816.34

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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.