Home / 31,192.98-43,060.44-19,878

Finding the Fourth Proportional to 31,192.98, 43,060.44 and 19,878

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Solution

The fourth proportional to 31,192.98, 43,060.44 and 19,878 is: 27,440.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,192.98 : 43,060.44 = 19,878 : x
  2. Step 2: Convert to fraction form
    31,192.98/43,060.44 = 19,878/x
  3. Step 3: Cross multiply
    31,192.98x = 43,060.44 × 19,878
  4. Step 4: Simplify right side
    31,192.98x = 855,955,426.32
  5. Step 5: Solve for x
    x = 855,955,426.32/31,192.98
  6. Step 6: Final answer
    x = 27,440.64

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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.