Home / 18,243.19-25,175.60-9,859.69

Finding the Fourth Proportional to 18,243.19, 25,175.60 and 9,859.69

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Solution

The fourth proportional to 18,243.19, 25,175.60 and 9,859.69 is: 13,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.19 : 25,175.60 = 9,859.69 : x
  2. Step 2: Convert to fraction form
    18,243.19/25,175.60 = 9,859.69/x
  3. Step 3: Cross multiply
    18,243.19x = 25,175.60 × 9,859.69
  4. Step 4: Simplify right side
    18,243.19x = 248,223,611.56
  5. Step 5: Solve for x
    x = 248,223,611.56/18,243.19
  6. Step 6: Final answer
    x = 13,606.37

Related Problems

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Half scale
Find fourth proportional to 36,486.38, 50,351.20 and 19,719.38
Double scale
Find fourth proportional to 18,244.19, 25,176.98 and 9,860.69
Similar ratio
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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.