Home / 34,782.96-47,999.64-19,878

Finding the Fourth Proportional to 34,782.96, 47,999.64 and 19,878

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Solution

The fourth proportional to 34,782.96, 47,999.64 and 19,878 is: 27,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,782.96 : 47,999.64 = 19,878 : x
  2. Step 2: Convert to fraction form
    34,782.96/47,999.64 = 19,878/x
  3. Step 3: Cross multiply
    34,782.96x = 47,999.64 × 19,878
  4. Step 4: Simplify right side
    34,782.96x = 954,136,843.92
  5. Step 5: Solve for x
    x = 954,136,843.92/34,782.96
  6. Step 6: Final answer
    x = 27,431.16

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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.