Home / 13,812.86-20,709.09-4,926.35

Finding the Fourth Proportional to 13,812.86, 20,709.09 and 4,926.35

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Solution

The fourth proportional to 13,812.86, 20,709.09 and 4,926.35 is: 7,385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.86 : 20,709.09 = 4,926.35 : x
  2. Step 2: Convert to fraction form
    13,812.86/20,709.09 = 4,926.35/x
  3. Step 3: Cross multiply
    13,812.86x = 20,709.09 × 4,926.35
  4. Step 4: Simplify right side
    13,812.86x = 102,020,121.98
  5. Step 5: Solve for x
    x = 102,020,121.98/13,812.86
  6. Step 6: Final answer
    x = 7,385.88

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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.