Home / 18,784.05-28,144.47-11,365.95

Finding the Fourth Proportional to 18,784.05, 28,144.47 and 11,365.95

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Solution

The fourth proportional to 18,784.05, 28,144.47 and 11,365.95 is: 17,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,784.05 : 28,144.47 = 11,365.95 : x
  2. Step 2: Convert to fraction form
    18,784.05/28,144.47 = 11,365.95/x
  3. Step 3: Cross multiply
    18,784.05x = 28,144.47 × 11,365.95
  4. Step 4: Simplify right side
    18,784.05x = 319,888,638.80
  5. Step 5: Solve for x
    x = 319,888,638.80/18,784.05
  6. Step 6: Final answer
    x = 17,029.80

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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.