Home / 12,918.78-19,374.07-5,020.77

Finding the Fourth Proportional to 12,918.78, 19,374.07 and 5,020.77

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Solution

The fourth proportional to 12,918.78, 19,374.07 and 5,020.77 is: 7,529.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.78 : 19,374.07 = 5,020.77 : x
  2. Step 2: Convert to fraction form
    12,918.78/19,374.07 = 5,020.77/x
  3. Step 3: Cross multiply
    12,918.78x = 19,374.07 × 5,020.77
  4. Step 4: Simplify right side
    12,918.78x = 97,272,749.43
  5. Step 5: Solve for x
    x = 97,272,749.43/12,918.78
  6. Step 6: Final answer
    x = 7,529.56

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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.