Home / 20,896.58-31,308.40-17,408.99

Finding the Fourth Proportional to 20,896.58, 31,308.40 and 17,408.99

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Solution

The fourth proportional to 20,896.58, 31,308.40 and 17,408.99 is: 26,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.58 : 31,308.40 = 17,408.99 : x
  2. Step 2: Convert to fraction form
    20,896.58/31,308.40 = 17,408.99/x
  3. Step 3: Cross multiply
    20,896.58x = 31,308.40 × 17,408.99
  4. Step 4: Simplify right side
    20,896.58x = 545,047,378.93
  5. Step 5: Solve for x
    x = 545,047,378.93/20,896.58
  6. Step 6: Final answer
    x = 26,083.10

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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.