Home / 18,406.26-25,392.56-12,435.75

Finding the Fourth Proportional to 18,406.26, 25,392.56 and 12,435.75

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Solution

The fourth proportional to 18,406.26, 25,392.56 and 12,435.75 is: 17,155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.26 : 25,392.56 = 12,435.75 : x
  2. Step 2: Convert to fraction form
    18,406.26/25,392.56 = 12,435.75/x
  3. Step 3: Cross multiply
    18,406.26x = 25,392.56 × 12,435.75
  4. Step 4: Simplify right side
    18,406.26x = 315,775,465.84
  5. Step 5: Solve for x
    x = 315,775,465.84/18,406.26
  6. Step 6: Final answer
    x = 17,155.87

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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.