Home / 18,635.09-25,716.90-10,137.69

Finding the Fourth Proportional to 18,635.09, 25,716.90 and 10,137.69

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Solution

The fourth proportional to 18,635.09, 25,716.90 and 10,137.69 is: 13,990.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.09 : 25,716.90 = 10,137.69 : x
  2. Step 2: Convert to fraction form
    18,635.09/25,716.90 = 10,137.69/x
  3. Step 3: Cross multiply
    18,635.09x = 25,716.90 × 10,137.69
  4. Step 4: Simplify right side
    18,635.09x = 260,709,954.09
  5. Step 5: Solve for x
    x = 260,709,954.09/18,635.09
  6. Step 6: Final answer
    x = 13,990.27

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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.