Home / 21,716.22-32,578.38-9,870.84

Finding the Fourth Proportional to 21,716.22, 32,578.38 and 9,870.84

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Solution

The fourth proportional to 21,716.22, 32,578.38 and 9,870.84 is: 14,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.22 : 32,578.38 = 9,870.84 : x
  2. Step 2: Convert to fraction form
    21,716.22/32,578.38 = 9,870.84/x
  3. Step 3: Cross multiply
    21,716.22x = 32,578.38 × 9,870.84
  4. Step 4: Simplify right side
    21,716.22x = 321,575,976.44
  5. Step 5: Solve for x
    x = 321,575,976.44/21,716.22
  6. Step 6: Final answer
    x = 14,808.10

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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.