Home / 18,519.75-25,557.32-10,136.25

Finding the Fourth Proportional to 18,519.75, 25,557.32 and 10,136.25

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Solution

The fourth proportional to 18,519.75, 25,557.32 and 10,136.25 is: 13,988.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.75 : 25,557.32 = 10,136.25 : x
  2. Step 2: Convert to fraction form
    18,519.75/25,557.32 = 10,136.25/x
  3. Step 3: Cross multiply
    18,519.75x = 25,557.32 × 10,136.25
  4. Step 4: Simplify right side
    18,519.75x = 259,055,410.19
  5. Step 5: Solve for x
    x = 259,055,410.19/18,519.75
  6. Step 6: Final answer
    x = 13,988.06

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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.