Home / 21,415.24-32,131.50-9,716.68

Finding the Fourth Proportional to 21,415.24, 32,131.50 and 9,716.68

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Solution

The fourth proportional to 21,415.24, 32,131.50 and 9,716.68 is: 14,578.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.24 : 32,131.50 = 9,716.68 : x
  2. Step 2: Convert to fraction form
    21,415.24/32,131.50 = 9,716.68/x
  3. Step 3: Cross multiply
    21,415.24x = 32,131.50 × 9,716.68
  4. Step 4: Simplify right side
    21,415.24x = 312,211,503.42
  5. Step 5: Solve for x
    x = 312,211,503.42/21,415.24
  6. Step 6: Final answer
    x = 14,578.94

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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.