Home / 13,853.29-19,112.80-7,883.47

Finding the Fourth Proportional to 13,853.29, 19,112.80 and 7,883.47

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Solution

The fourth proportional to 13,853.29, 19,112.80 and 7,883.47 is: 10,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.29 : 19,112.80 = 7,883.47 : x
  2. Step 2: Convert to fraction form
    13,853.29/19,112.80 = 7,883.47/x
  3. Step 3: Cross multiply
    13,853.29x = 19,112.80 × 7,883.47
  4. Step 4: Simplify right side
    13,853.29x = 150,675,089.85
  5. Step 5: Solve for x
    x = 150,675,089.85/13,853.29
  6. Step 6: Final answer
    x = 10,876.48

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1.5x scale

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.