Home / 18,564.10-27,850.20-5,415.40

Finding the Fourth Proportional to 18,564.10, 27,850.20 and 5,415.40

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Solution

The fourth proportional to 18,564.10, 27,850.20 and 5,415.40 is: 8,124.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,564.10 : 27,850.20 = 5,415.40 : x
  2. Step 2: Convert to fraction form
    18,564.10/27,850.20 = 5,415.40/x
  3. Step 3: Cross multiply
    18,564.10x = 27,850.20 × 5,415.40
  4. Step 4: Simplify right side
    18,564.10x = 150,819,973.08
  5. Step 5: Solve for x
    x = 150,819,973.08/18,564.10
  6. Step 6: Final answer
    x = 8,124.28

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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.