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Finding the Fourth Proportional to 13,394.70, 18,487.35 and 7,733.16

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Solution

The fourth proportional to 13,394.70, 18,487.35 and 7,733.16 is: 10,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.70 : 18,487.35 = 7,733.16 : x
  2. Step 2: Convert to fraction form
    13,394.70/18,487.35 = 7,733.16/x
  3. Step 3: Cross multiply
    13,394.70x = 18,487.35 × 7,733.16
  4. Step 4: Simplify right side
    13,394.70x = 142,965,635.53
  5. Step 5: Solve for x
    x = 142,965,635.53/13,394.70
  6. Step 6: Final answer
    x = 10,673.30

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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.