Home / 28,539.82-42,822-15,389.12

Finding the Fourth Proportional to 28,539.82, 42,822 and 15,389.12

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Solution

The fourth proportional to 28,539.82, 42,822 and 15,389.12 is: 23,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.82 : 42,822 = 15,389.12 : x
  2. Step 2: Convert to fraction form
    28,539.82/42,822 = 15,389.12/x
  3. Step 3: Cross multiply
    28,539.82x = 42,822 × 15,389.12
  4. Step 4: Simplify right side
    28,539.82x = 658,992,896.64
  5. Step 5: Solve for x
    x = 658,992,896.64/28,539.82
  6. Step 6: Final answer
    x = 23,090.30

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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.