Home / 12,788.58-19,185.46-4,021.45

Finding the Fourth Proportional to 12,788.58, 19,185.46 and 4,021.45

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Solution

The fourth proportional to 12,788.58, 19,185.46 and 4,021.45 is: 6,032.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.58 : 19,185.46 = 4,021.45 : x
  2. Step 2: Convert to fraction form
    12,788.58/19,185.46 = 4,021.45/x
  3. Step 3: Cross multiply
    12,788.58x = 19,185.46 × 4,021.45
  4. Step 4: Simplify right side
    12,788.58x = 77,153,310.10
  5. Step 5: Solve for x
    x = 77,153,310.10/12,788.58
  6. Step 6: Final answer
    x = 6,032.98

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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.