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Finding the Fourth Proportional to 13,914, 20,871 and 5,706

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Solution

The fourth proportional to 13,914, 20,871 and 5,706 is: 8,559

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914 : 20,871 = 5,706 : x
  2. Step 2: Convert to fraction form
    13,914/20,871 = 5,706/x
  3. Step 3: Cross multiply
    13,914x = 20,871 × 5,706
  4. Step 4: Simplify right side
    13,914x = 119,089,926
  5. Step 5: Solve for x
    x = 119,089,926/13,914
  6. Step 6: Final answer
    x = 8,559

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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.