Home / 13,366.85-18,450.37-7,705.39

Finding the Fourth Proportional to 13,366.85, 18,450.37 and 7,705.39

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Solution

The fourth proportional to 13,366.85, 18,450.37 and 7,705.39 is: 10,635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366.85 : 18,450.37 = 7,705.39 : x
  2. Step 2: Convert to fraction form
    13,366.85/18,450.37 = 7,705.39/x
  3. Step 3: Cross multiply
    13,366.85x = 18,450.37 × 7,705.39
  4. Step 4: Simplify right side
    13,366.85x = 142,167,231.10
  5. Step 5: Solve for x
    x = 142,167,231.10/13,366.85
  6. Step 6: Final answer
    x = 10,635.80

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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.