Home / 19,918.82-29,877.95-6,780.35

Finding the Fourth Proportional to 19,918.82, 29,877.95 and 6,780.35

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Solution

The fourth proportional to 19,918.82, 29,877.95 and 6,780.35 is: 10,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.82 : 29,877.95 = 6,780.35 : x
  2. Step 2: Convert to fraction form
    19,918.82/29,877.95 = 6,780.35/x
  3. Step 3: Cross multiply
    19,918.82x = 29,877.95 × 6,780.35
  4. Step 4: Simplify right side
    19,918.82x = 202,582,825.84
  5. Step 5: Solve for x
    x = 202,582,825.84/19,918.82
  6. Step 6: Final answer
    x = 10,170.43

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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.