Home / 19,018.80-28,390.77-16,686

Finding the Fourth Proportional to 19,018.80, 28,390.77 and 16,686

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Solution

The fourth proportional to 19,018.80, 28,390.77 and 16,686 is: 24,908.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,018.80 : 28,390.77 = 16,686 : x
  2. Step 2: Convert to fraction form
    19,018.80/28,390.77 = 16,686/x
  3. Step 3: Cross multiply
    19,018.80x = 28,390.77 × 16,686
  4. Step 4: Simplify right side
    19,018.80x = 473,728,388.22
  5. Step 5: Solve for x
    x = 473,728,388.22/19,018.80
  6. Step 6: Final answer
    x = 24,908.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.