Home / 28,078.74-42,116.49-16,982.45

Finding the Fourth Proportional to 28,078.74, 42,116.49 and 16,982.45

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Solution

The fourth proportional to 28,078.74, 42,116.49 and 16,982.45 is: 25,472.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.74 : 42,116.49 = 16,982.45 : x
  2. Step 2: Convert to fraction form
    28,078.74/42,116.49 = 16,982.45/x
  3. Step 3: Cross multiply
    28,078.74x = 42,116.49 × 16,982.45
  4. Step 4: Simplify right side
    28,078.74x = 715,240,975.02
  5. Step 5: Solve for x
    x = 715,240,975.02/28,078.74
  6. Step 6: Final answer
    x = 25,472.69

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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.