Home / 19,128.26-28,691.60-6,651.11

Finding the Fourth Proportional to 19,128.26, 28,691.60 and 6,651.11

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Solution

The fourth proportional to 19,128.26, 28,691.60 and 6,651.11 is: 9,976.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.26 : 28,691.60 = 6,651.11 : x
  2. Step 2: Convert to fraction form
    19,128.26/28,691.60 = 6,651.11/x
  3. Step 3: Cross multiply
    19,128.26x = 28,691.60 × 6,651.11
  4. Step 4: Simplify right side
    19,128.26x = 190,830,810.96
  5. Step 5: Solve for x
    x = 190,830,810.96/19,128.26
  6. Step 6: Final answer
    x = 9,976.38

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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.