Home / 13,586.09-20,378.90-3,725.36

Finding the Fourth Proportional to 13,586.09, 20,378.90 and 3,725.36

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Solution

The fourth proportional to 13,586.09, 20,378.90 and 3,725.36 is: 5,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.09 : 20,378.90 = 3,725.36 : x
  2. Step 2: Convert to fraction form
    13,586.09/20,378.90 = 3,725.36/x
  3. Step 3: Cross multiply
    13,586.09x = 20,378.90 × 3,725.36
  4. Step 4: Simplify right side
    13,586.09x = 75,918,618.38
  5. Step 5: Solve for x
    x = 75,918,618.38/13,586.09
  6. Step 6: Final answer
    x = 5,587.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.