Home / 20,948.36-31,421.99-11,583.54

Finding the Fourth Proportional to 20,948.36, 31,421.99 and 11,583.54

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Solution

The fourth proportional to 20,948.36, 31,421.99 and 11,583.54 is: 17,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.36 : 31,421.99 = 11,583.54 : x
  2. Step 2: Convert to fraction form
    20,948.36/31,421.99 = 11,583.54/x
  3. Step 3: Cross multiply
    20,948.36x = 31,421.99 × 11,583.54
  4. Step 4: Simplify right side
    20,948.36x = 363,977,907.00
  5. Step 5: Solve for x
    x = 363,977,907.00/20,948.36
  6. Step 6: Final answer
    x = 17,375.01

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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.