Home / 13,191.25-18,201.01-8,087.86

Finding the Fourth Proportional to 13,191.25, 18,201.01 and 8,087.86

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Solution

The fourth proportional to 13,191.25, 18,201.01 and 8,087.86 is: 11,159.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.25 : 18,201.01 = 8,087.86 : x
  2. Step 2: Convert to fraction form
    13,191.25/18,201.01 = 8,087.86/x
  3. Step 3: Cross multiply
    13,191.25x = 18,201.01 × 8,087.86
  4. Step 4: Simplify right side
    13,191.25x = 147,207,220.74
  5. Step 5: Solve for x
    x = 147,207,220.74/13,191.25
  6. Step 6: Final answer
    x = 11,159.46

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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.