Home / 19,982.63-29,973.96-5,190.31

Finding the Fourth Proportional to 19,982.63, 29,973.96 and 5,190.31

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Solution

The fourth proportional to 19,982.63, 29,973.96 and 5,190.31 is: 7,785.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,982.63 : 29,973.96 = 5,190.31 : x
  2. Step 2: Convert to fraction form
    19,982.63/29,973.96 = 5,190.31/x
  3. Step 3: Cross multiply
    19,982.63x = 29,973.96 × 5,190.31
  4. Step 4: Simplify right side
    19,982.63x = 155,574,144.33
  5. Step 5: Solve for x
    x = 155,574,144.33/19,982.63
  6. Step 6: Final answer
    x = 7,785.47

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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.