Home / 13,427.87-18,532.68-11,186.20

Finding the Fourth Proportional to 13,427.87, 18,532.68 and 11,186.20

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Solution

The fourth proportional to 13,427.87, 18,532.68 and 11,186.20 is: 15,438.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.87 : 18,532.68 = 11,186.20 : x
  2. Step 2: Convert to fraction form
    13,427.87/18,532.68 = 11,186.20/x
  3. Step 3: Cross multiply
    13,427.87x = 18,532.68 × 11,186.20
  4. Step 4: Simplify right side
    13,427.87x = 207,310,172.35
  5. Step 5: Solve for x
    x = 207,310,172.35/13,427.87
  6. Step 6: Final answer
    x = 15,438.80

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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.