Home / 28,383.85-42,584.90-8,664.40

Finding the Fourth Proportional to 28,383.85, 42,584.90 and 8,664.40

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Solution

The fourth proportional to 28,383.85, 42,584.90 and 8,664.40 is: 12,999.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.85 : 42,584.90 = 8,664.40 : x
  2. Step 2: Convert to fraction form
    28,383.85/42,584.90 = 8,664.40/x
  3. Step 3: Cross multiply
    28,383.85x = 42,584.90 × 8,664.40
  4. Step 4: Simplify right side
    28,383.85x = 368,972,564.24
  5. Step 5: Solve for x
    x = 368,972,564.24/28,383.85
  6. Step 6: Final answer
    x = 12,999.38

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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.