Home / 25,383.85-38,110.72-12,912.32

Finding the Fourth Proportional to 25,383.85, 38,110.72 and 12,912.32

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Solution

The fourth proportional to 25,383.85, 38,110.72 and 12,912.32 is: 19,386.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,383.85 : 38,110.72 = 12,912.32 : x
  2. Step 2: Convert to fraction form
    25,383.85/38,110.72 = 12,912.32/x
  3. Step 3: Cross multiply
    25,383.85x = 38,110.72 × 12,912.32
  4. Step 4: Simplify right side
    25,383.85x = 492,097,556.96
  5. Step 5: Solve for x
    x = 492,097,556.96/25,383.85
  6. Step 6: Final answer
    x = 19,386.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.