Home / 15,984.78-23,977.49-5,457.21

Finding the Fourth Proportional to 15,984.78, 23,977.49 and 5,457.21

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Solution

The fourth proportional to 15,984.78, 23,977.49 and 5,457.21 is: 8,185.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,984.78 : 23,977.49 = 5,457.21 : x
  2. Step 2: Convert to fraction form
    15,984.78/23,977.49 = 5,457.21/x
  3. Step 3: Cross multiply
    15,984.78x = 23,977.49 × 5,457.21
  4. Step 4: Simplify right side
    15,984.78x = 130,850,170.92
  5. Step 5: Solve for x
    x = 130,850,170.92/15,984.78
  6. Step 6: Final answer
    x = 8,185.92

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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.