Home / 18,379.15-25,361.58-12,418.81

Finding the Fourth Proportional to 18,379.15, 25,361.58 and 12,418.81

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Solution

The fourth proportional to 18,379.15, 25,361.58 and 12,418.81 is: 17,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.15 : 25,361.58 = 12,418.81 : x
  2. Step 2: Convert to fraction form
    18,379.15/25,361.58 = 12,418.81/x
  3. Step 3: Cross multiply
    18,379.15x = 25,361.58 × 12,418.81
  4. Step 4: Simplify right side
    18,379.15x = 314,960,643.32
  5. Step 5: Solve for x
    x = 314,960,643.32/18,379.15
  6. Step 6: Final answer
    x = 17,136.84

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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.