Home / 13,141.56-18,135.37-8,425.84

Finding the Fourth Proportional to 13,141.56, 18,135.37 and 8,425.84

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Solution

The fourth proportional to 13,141.56, 18,135.37 and 8,425.84 is: 11,627.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.56 : 18,135.37 = 8,425.84 : x
  2. Step 2: Convert to fraction form
    13,141.56/18,135.37 = 8,425.84/x
  3. Step 3: Cross multiply
    13,141.56x = 18,135.37 × 8,425.84
  4. Step 4: Simplify right side
    13,141.56x = 152,805,725.96
  5. Step 5: Solve for x
    x = 152,805,725.96/13,141.56
  6. Step 6: Final answer
    x = 11,627.67

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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.