Home / 28,488.63-39,321.93-16,390.47

Finding the Fourth Proportional to 28,488.63, 39,321.93 and 16,390.47

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Solution

The fourth proportional to 28,488.63, 39,321.93 and 16,390.47 is: 22,623.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.63 : 39,321.93 = 16,390.47 : x
  2. Step 2: Convert to fraction form
    28,488.63/39,321.93 = 16,390.47/x
  3. Step 3: Cross multiply
    28,488.63x = 39,321.93 × 16,390.47
  4. Step 4: Simplify right side
    28,488.63x = 644,504,914.01
  5. Step 5: Solve for x
    x = 644,504,914.01/28,488.63
  6. Step 6: Final answer
    x = 22,623.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.