Home / 11,362.36-15,678.94-6,645.72

Finding the Fourth Proportional to 11,362.36, 15,678.94 and 6,645.72

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Solution

The fourth proportional to 11,362.36, 15,678.94 and 6,645.72 is: 9,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,362.36 : 15,678.94 = 6,645.72 : x
  2. Step 2: Convert to fraction form
    11,362.36/15,678.94 = 6,645.72/x
  3. Step 3: Cross multiply
    11,362.36x = 15,678.94 × 6,645.72
  4. Step 4: Simplify right side
    11,362.36x = 104,197,845.14
  5. Step 5: Solve for x
    x = 104,197,845.14/11,362.36
  6. Step 6: Final answer
    x = 9,170.44

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1.5x scale

Why These Related Problems?

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