Home / 13,912.87-20,870.60-5,030.42

Finding the Fourth Proportional to 13,912.87, 20,870.60 and 5,030.42

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Solution

The fourth proportional to 13,912.87, 20,870.60 and 5,030.42 is: 7,546.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.87 : 20,870.60 = 5,030.42 : x
  2. Step 2: Convert to fraction form
    13,912.87/20,870.60 = 5,030.42/x
  3. Step 3: Cross multiply
    13,912.87x = 20,870.60 × 5,030.42
  4. Step 4: Simplify right side
    13,912.87x = 104,987,910.68
  5. Step 5: Solve for x
    x = 104,987,910.68/13,912.87
  6. Step 6: Final answer
    x = 7,546.10

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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.