Home / 12,918.12-19,358.66-7,359.96

Finding the Fourth Proportional to 12,918.12, 19,358.66 and 7,359.96

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Solution

The fourth proportional to 12,918.12, 19,358.66 and 7,359.96 is: 11,029.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.12 : 19,358.66 = 7,359.96 : x
  2. Step 2: Convert to fraction form
    12,918.12/19,358.66 = 7,359.96/x
  3. Step 3: Cross multiply
    12,918.12x = 19,358.66 × 7,359.96
  4. Step 4: Simplify right side
    12,918.12x = 142,478,963.25
  5. Step 5: Solve for x
    x = 142,478,963.25/12,918.12
  6. Step 6: Final answer
    x = 11,029.39

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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.