Home / 19,670.87-29,510.91-7,825.31

Finding the Fourth Proportional to 19,670.87, 29,510.91 and 7,825.31

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Solution

The fourth proportional to 19,670.87, 29,510.91 and 7,825.31 is: 11,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,670.87 : 29,510.91 = 7,825.31 : x
  2. Step 2: Convert to fraction form
    19,670.87/29,510.91 = 7,825.31/x
  3. Step 3: Cross multiply
    19,670.87x = 29,510.91 × 7,825.31
  4. Step 4: Simplify right side
    19,670.87x = 230,932,112.47
  5. Step 5: Solve for x
    x = 230,932,112.47/19,670.87
  6. Step 6: Final answer
    x = 11,739.80

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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.