Home / 13,662.35-18,854.75-8,355.50

Finding the Fourth Proportional to 13,662.35, 18,854.75 and 8,355.50

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Solution

The fourth proportional to 13,662.35, 18,854.75 and 8,355.50 is: 11,531.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.35 : 18,854.75 = 8,355.50 : x
  2. Step 2: Convert to fraction form
    13,662.35/18,854.75 = 8,355.50/x
  3. Step 3: Cross multiply
    13,662.35x = 18,854.75 × 8,355.50
  4. Step 4: Simplify right side
    13,662.35x = 157,540,821.85
  5. Step 5: Solve for x
    x = 157,540,821.85/13,662.35
  6. Step 6: Final answer
    x = 11,531.02

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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.