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Finding the Fourth Proportional to 13,318.58, 19,975.98 and 8,373.08

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Solution

The fourth proportional to 13,318.58, 19,975.98 and 8,373.08 is: 12,558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.58 : 19,975.98 = 8,373.08 : x
  2. Step 2: Convert to fraction form
    13,318.58/19,975.98 = 8,373.08/x
  3. Step 3: Cross multiply
    13,318.58x = 19,975.98 × 8,373.08
  4. Step 4: Simplify right side
    13,318.58x = 167,260,478.62
  5. Step 5: Solve for x
    x = 167,260,478.62/13,318.58
  6. Step 6: Final answer
    x = 12,558.43

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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.