Home / 19,111.26-28,668.70-7,425.38

Finding the Fourth Proportional to 19,111.26, 28,668.70 and 7,425.38

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Solution

The fourth proportional to 19,111.26, 28,668.70 and 7,425.38 is: 11,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.26 : 28,668.70 = 7,425.38 : x
  2. Step 2: Convert to fraction form
    19,111.26/28,668.70 = 7,425.38/x
  3. Step 3: Cross multiply
    19,111.26x = 28,668.70 × 7,425.38
  4. Step 4: Simplify right side
    19,111.26x = 212,875,991.61
  5. Step 5: Solve for x
    x = 212,875,991.61/19,111.26
  6. Step 6: Final answer
    x = 11,138.77

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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.