Home / 28,440.12-39,247.02-15,867

Finding the Fourth Proportional to 28,440.12, 39,247.02 and 15,867

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Solution

The fourth proportional to 28,440.12, 39,247.02 and 15,867 is: 21,896.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.12 : 39,247.02 = 15,867 : x
  2. Step 2: Convert to fraction form
    28,440.12/39,247.02 = 15,867/x
  3. Step 3: Cross multiply
    28,440.12x = 39,247.02 × 15,867
  4. Step 4: Simplify right side
    28,440.12x = 622,732,466.34
  5. Step 5: Solve for x
    x = 622,732,466.34/28,440.12
  6. Step 6: Final answer
    x = 21,896.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.