Home / 13,396.20-18,486.06-7,427.81

Finding the Fourth Proportional to 13,396.20, 18,486.06 and 7,427.81

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Solution

The fourth proportional to 13,396.20, 18,486.06 and 7,427.81 is: 10,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.20 : 18,486.06 = 7,427.81 : x
  2. Step 2: Convert to fraction form
    13,396.20/18,486.06 = 7,427.81/x
  3. Step 3: Cross multiply
    13,396.20x = 18,486.06 × 7,427.81
  4. Step 4: Simplify right side
    13,396.20x = 137,310,941.33
  5. Step 5: Solve for x
    x = 137,310,941.33/13,396.20
  6. Step 6: Final answer
    x = 10,249.99

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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.