Home / 19,918.26-29,877.75-5,127.48

Finding the Fourth Proportional to 19,918.26, 29,877.75 and 5,127.48

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Solution

The fourth proportional to 19,918.26, 29,877.75 and 5,127.48 is: 7,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.26 : 29,877.75 = 5,127.48 : x
  2. Step 2: Convert to fraction form
    19,918.26/29,877.75 = 5,127.48/x
  3. Step 3: Cross multiply
    19,918.26x = 29,877.75 × 5,127.48
  4. Step 4: Simplify right side
    19,918.26x = 153,197,565.57
  5. Step 5: Solve for x
    x = 153,197,565.57/19,918.26
  6. Step 6: Final answer
    x = 7,691.31

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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.