Home / 19,485.31-26,872.06-12,768.47

Finding the Fourth Proportional to 19,485.31, 26,872.06 and 12,768.47

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Solution

The fourth proportional to 19,485.31, 26,872.06 and 12,768.47 is: 17,608.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.31 : 26,872.06 = 12,768.47 : x
  2. Step 2: Convert to fraction form
    19,485.31/26,872.06 = 12,768.47/x
  3. Step 3: Cross multiply
    19,485.31x = 26,872.06 × 12,768.47
  4. Step 4: Simplify right side
    19,485.31x = 343,115,091.95
  5. Step 5: Solve for x
    x = 343,115,091.95/19,485.31
  6. Step 6: Final answer
    x = 17,608.91

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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.