Home / 31,190.14-46,784.40-7,816.78

Finding the Fourth Proportional to 31,190.14, 46,784.40 and 7,816.78

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Solution

The fourth proportional to 31,190.14, 46,784.40 and 7,816.78 is: 11,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,190.14 : 46,784.40 = 7,816.78 : x
  2. Step 2: Convert to fraction form
    31,190.14/46,784.40 = 7,816.78/x
  3. Step 3: Cross multiply
    31,190.14x = 46,784.40 × 7,816.78
  4. Step 4: Simplify right side
    31,190.14x = 365,703,362.23
  5. Step 5: Solve for x
    x = 365,703,362.23/31,190.14
  6. Step 6: Final answer
    x = 11,724.97

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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.