Home / 18,361.12-25,346.09-12,400.86

Finding the Fourth Proportional to 18,361.12, 25,346.09 and 12,400.86

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Solution

The fourth proportional to 18,361.12, 25,346.09 and 12,400.86 is: 17,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.12 : 25,346.09 = 12,400.86 : x
  2. Step 2: Convert to fraction form
    18,361.12/25,346.09 = 12,400.86/x
  3. Step 3: Cross multiply
    18,361.12x = 25,346.09 × 12,400.86
  4. Step 4: Simplify right side
    18,361.12x = 314,313,390.01
  5. Step 5: Solve for x
    x = 314,313,390.01/18,361.12
  6. Step 6: Final answer
    x = 17,118.42

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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.