Home / 19,110.35-28,662.20-5,071.80

Finding the Fourth Proportional to 19,110.35, 28,662.20 and 5,071.80

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Solution

The fourth proportional to 19,110.35, 28,662.20 and 5,071.80 is: 7,606.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,110.35 : 28,662.20 = 5,071.80 : x
  2. Step 2: Convert to fraction form
    19,110.35/28,662.20 = 5,071.80/x
  3. Step 3: Cross multiply
    19,110.35x = 28,662.20 × 5,071.80
  4. Step 4: Simplify right side
    19,110.35x = 145,368,891.11
  5. Step 5: Solve for x
    x = 145,368,891.11/19,110.35
  6. Step 6: Final answer
    x = 7,606.81

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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.