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Finding the Fourth Proportional to 13,314.70, 18,374.34 and 7,346.08

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Solution

The fourth proportional to 13,314.70, 18,374.34 and 7,346.08 is: 10,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,314.70 : 18,374.34 = 7,346.08 : x
  2. Step 2: Convert to fraction form
    13,314.70/18,374.34 = 7,346.08/x
  3. Step 3: Cross multiply
    13,314.70x = 18,374.34 × 7,346.08
  4. Step 4: Simplify right side
    13,314.70x = 134,979,371.59
  5. Step 5: Solve for x
    x = 134,979,371.59/13,314.70
  6. Step 6: Final answer
    x = 10,137.62

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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.