Home / 21,408.46-32,115.77-6,618.53

Finding the Fourth Proportional to 21,408.46, 32,115.77 and 6,618.53

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Solution

The fourth proportional to 21,408.46, 32,115.77 and 6,618.53 is: 9,928.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.46 : 32,115.77 = 6,618.53 : x
  2. Step 2: Convert to fraction form
    21,408.46/32,115.77 = 6,618.53/x
  3. Step 3: Cross multiply
    21,408.46x = 32,115.77 × 6,618.53
  4. Step 4: Simplify right side
    21,408.46x = 212,559,291.12
  5. Step 5: Solve for x
    x = 212,559,291.12/21,408.46
  6. Step 6: Final answer
    x = 9,928.75

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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.