Home / 12,077.70-18,115.65-5,055.90

Finding the Fourth Proportional to 12,077.70, 18,115.65 and 5,055.90

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Solution

The fourth proportional to 12,077.70, 18,115.65 and 5,055.90 is: 7,583.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.70 : 18,115.65 = 5,055.90 : x
  2. Step 2: Convert to fraction form
    12,077.70/18,115.65 = 5,055.90/x
  3. Step 3: Cross multiply
    12,077.70x = 18,115.65 × 5,055.90
  4. Step 4: Simplify right side
    12,077.70x = 91,590,914.84
  5. Step 5: Solve for x
    x = 91,590,914.84/12,077.70
  6. Step 6: Final answer
    x = 7,583.47

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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.