Home / 12,120.47-16,726.16-6,815.33

Finding the Fourth Proportional to 12,120.47, 16,726.16 and 6,815.33

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Solution

The fourth proportional to 12,120.47, 16,726.16 and 6,815.33 is: 9,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.47 : 16,726.16 = 6,815.33 : x
  2. Step 2: Convert to fraction form
    12,120.47/16,726.16 = 6,815.33/x
  3. Step 3: Cross multiply
    12,120.47x = 16,726.16 × 6,815.33
  4. Step 4: Simplify right side
    12,120.47x = 113,994,182.33
  5. Step 5: Solve for x
    x = 113,994,182.33/12,120.47
  6. Step 6: Final answer
    x = 9,405.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.