Home / 17,720.32-26,579.84-5,408

Finding the Fourth Proportional to 17,720.32, 26,579.84 and 5,408

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Solution

The fourth proportional to 17,720.32, 26,579.84 and 5,408 is: 8,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.32 : 26,579.84 = 5,408 : x
  2. Step 2: Convert to fraction form
    17,720.32/26,579.84 = 5,408/x
  3. Step 3: Cross multiply
    17,720.32x = 26,579.84 × 5,408
  4. Step 4: Simplify right side
    17,720.32x = 143,743,774.72
  5. Step 5: Solve for x
    x = 143,743,774.72/17,720.32
  6. Step 6: Final answer
    x = 8,111.80

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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.