Home / 12,918.22-19,379.36-5,522.72

Finding the Fourth Proportional to 12,918.22, 19,379.36 and 5,522.72

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Solution

The fourth proportional to 12,918.22, 19,379.36 and 5,522.72 is: 8,284.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.22 : 19,379.36 = 5,522.72 : x
  2. Step 2: Convert to fraction form
    12,918.22/19,379.36 = 5,522.72/x
  3. Step 3: Cross multiply
    12,918.22x = 19,379.36 × 5,522.72
  4. Step 4: Simplify right side
    12,918.22x = 107,026,768.64
  5. Step 5: Solve for x
    x = 107,026,768.64/12,918.22
  6. Step 6: Final answer
    x = 8,284.95

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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.