Home / 12,647.22-18,969.62-5,627.36

Finding the Fourth Proportional to 12,647.22, 18,969.62 and 5,627.36

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Solution

The fourth proportional to 12,647.22, 18,969.62 and 5,627.36 is: 8,440.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.22 : 18,969.62 = 5,627.36 : x
  2. Step 2: Convert to fraction form
    12,647.22/18,969.62 = 5,627.36/x
  3. Step 3: Cross multiply
    12,647.22x = 18,969.62 × 5,627.36
  4. Step 4: Simplify right side
    12,647.22x = 106,748,757.82
  5. Step 5: Solve for x
    x = 106,748,757.82/12,647.22
  6. Step 6: Final answer
    x = 8,440.49

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1.5x scale

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.