Home / 28,436.67-42,636.75-11,808.18

Finding the Fourth Proportional to 28,436.67, 42,636.75 and 11,808.18

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Solution

The fourth proportional to 28,436.67, 42,636.75 and 11,808.18 is: 17,704.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.67 : 42,636.75 = 11,808.18 : x
  2. Step 2: Convert to fraction form
    28,436.67/42,636.75 = 11,808.18/x
  3. Step 3: Cross multiply
    28,436.67x = 42,636.75 × 11,808.18
  4. Step 4: Simplify right side
    28,436.67x = 503,462,418.62
  5. Step 5: Solve for x
    x = 503,462,418.62/28,436.67
  6. Step 6: Final answer
    x = 17,704.69

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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.