Home / 28,443.67-42,647.25-11,815.18

Finding the Fourth Proportional to 28,443.67, 42,647.25 and 11,815.18

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Solution

The fourth proportional to 28,443.67, 42,647.25 and 11,815.18 is: 17,715.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,443.67 : 42,647.25 = 11,815.18 : x
  2. Step 2: Convert to fraction form
    28,443.67/42,647.25 = 11,815.18/x
  3. Step 3: Cross multiply
    28,443.67x = 42,647.25 × 11,815.18
  4. Step 4: Simplify right side
    28,443.67x = 503,884,935.26
  5. Step 5: Solve for x
    x = 503,884,935.26/28,443.67
  6. Step 6: Final answer
    x = 17,715.19

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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.