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Finding the Fourth Proportional to 13,913.17, 20,871.81 and 4,051.15

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Solution

The fourth proportional to 13,913.17, 20,871.81 and 4,051.15 is: 6,077.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.17 : 20,871.81 = 4,051.15 : x
  2. Step 2: Convert to fraction form
    13,913.17/20,871.81 = 4,051.15/x
  3. Step 3: Cross multiply
    13,913.17x = 20,871.81 × 4,051.15
  4. Step 4: Simplify right side
    13,913.17x = 84,554,833.08
  5. Step 5: Solve for x
    x = 84,554,833.08/13,913.17
  6. Step 6: Final answer
    x = 6,077.32

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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.