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Finding the Fourth Proportional to 13,693.94, 20,532.05 and 5,374.79

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Solution

The fourth proportional to 13,693.94, 20,532.05 and 5,374.79 is: 8,058.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.94 : 20,532.05 = 5,374.79 : x
  2. Step 2: Convert to fraction form
    13,693.94/20,532.05 = 5,374.79/x
  3. Step 3: Cross multiply
    13,693.94x = 20,532.05 × 5,374.79
  4. Step 4: Simplify right side
    13,693.94x = 110,355,457.02
  5. Step 5: Solve for x
    x = 110,355,457.02/13,693.94
  6. Step 6: Final answer
    x = 8,058.71

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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.