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Finding the Fourth Proportional to 13,367.79, 18,448.92 and 7,702.75

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Solution

The fourth proportional to 13,367.79, 18,448.92 and 7,702.75 is: 10,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,367.79 : 18,448.92 = 7,702.75 : x
  2. Step 2: Convert to fraction form
    13,367.79/18,448.92 = 7,702.75/x
  3. Step 3: Cross multiply
    13,367.79x = 18,448.92 × 7,702.75
  4. Step 4: Simplify right side
    13,367.79x = 142,107,418.53
  5. Step 5: Solve for x
    x = 142,107,418.53/13,367.79
  6. Step 6: Final answer
    x = 10,630.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.