Home / 13,899.84-20,828.16-7,654.56

Finding the Fourth Proportional to 13,899.84, 20,828.16 and 7,654.56

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Solution

The fourth proportional to 13,899.84, 20,828.16 and 7,654.56 is: 11,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.84 : 20,828.16 = 7,654.56 : x
  2. Step 2: Convert to fraction form
    13,899.84/20,828.16 = 7,654.56/x
  3. Step 3: Cross multiply
    13,899.84x = 20,828.16 × 7,654.56
  4. Step 4: Simplify right side
    13,899.84x = 159,430,400.41
  5. Step 5: Solve for x
    x = 159,430,400.41/13,899.84
  6. Step 6: Final answer
    x = 11,469.95

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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.