Home / 66,684.06-100,018.80-19,926

Finding the Fourth Proportional to 66,684.06, 100,018.80 and 19,926

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Solution

The fourth proportional to 66,684.06, 100,018.80 and 19,926 is: 29,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,684.06 : 100,018.80 = 19,926 : x
  2. Step 2: Convert to fraction form
    66,684.06/100,018.80 = 19,926/x
  3. Step 3: Cross multiply
    66,684.06x = 100,018.80 × 19,926
  4. Step 4: Simplify right side
    66,684.06x = 1,992,974,608.80
  5. Step 5: Solve for x
    x = 1,992,974,608.80/66,684.06
  6. Step 6: Final answer
    x = 29,886.82

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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.