Home / 21,212.42-31,816.80-6,424.65

Finding the Fourth Proportional to 21,212.42, 31,816.80 and 6,424.65

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Solution

The fourth proportional to 21,212.42, 31,816.80 and 6,424.65 is: 9,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.42 : 31,816.80 = 6,424.65 : x
  2. Step 2: Convert to fraction form
    21,212.42/31,816.80 = 6,424.65/x
  3. Step 3: Cross multiply
    21,212.42x = 31,816.80 × 6,424.65
  4. Step 4: Simplify right side
    21,212.42x = 204,411,804.12
  5. Step 5: Solve for x
    x = 204,411,804.12/21,212.42
  6. Step 6: Final answer
    x = 9,636.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.