Home / 19,272.15-28,913.37-8,179.47

Finding the Fourth Proportional to 19,272.15, 28,913.37 and 8,179.47

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Solution

The fourth proportional to 19,272.15, 28,913.37 and 8,179.47 is: 12,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,272.15 : 28,913.37 = 8,179.47 : x
  2. Step 2: Convert to fraction form
    19,272.15/28,913.37 = 8,179.47/x
  3. Step 3: Cross multiply
    19,272.15x = 28,913.37 × 8,179.47
  4. Step 4: Simplify right side
    19,272.15x = 236,496,042.51
  5. Step 5: Solve for x
    x = 236,496,042.51/19,272.15
  6. Step 6: Final answer
    x = 12,271.39

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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.