Home / 13,701.60-18,905.48-8,112.96

Finding the Fourth Proportional to 13,701.60, 18,905.48 and 8,112.96

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Solution

The fourth proportional to 13,701.60, 18,905.48 and 8,112.96 is: 11,194.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.60 : 18,905.48 = 8,112.96 : x
  2. Step 2: Convert to fraction form
    13,701.60/18,905.48 = 8,112.96/x
  3. Step 3: Cross multiply
    13,701.60x = 18,905.48 × 8,112.96
  4. Step 4: Simplify right side
    13,701.60x = 153,379,403.02
  5. Step 5: Solve for x
    x = 153,379,403.02/13,701.60
  6. Step 6: Final answer
    x = 11,194.27

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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.