Home / 20,438.10-30,653.28-6,396.01

Finding the Fourth Proportional to 20,438.10, 30,653.28 and 6,396.01

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Solution

The fourth proportional to 20,438.10, 30,653.28 and 6,396.01 is: 9,592.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438.10 : 30,653.28 = 6,396.01 : x
  2. Step 2: Convert to fraction form
    20,438.10/30,653.28 = 6,396.01/x
  3. Step 3: Cross multiply
    20,438.10x = 30,653.28 × 6,396.01
  4. Step 4: Simplify right side
    20,438.10x = 196,058,608.78
  5. Step 5: Solve for x
    x = 196,058,608.78/20,438.10
  6. Step 6: Final answer
    x = 9,592.80

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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.