Home / 28,181.93-42,260.43-8,456.70

Finding the Fourth Proportional to 28,181.93, 42,260.43 and 8,456.70

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Solution

The fourth proportional to 28,181.93, 42,260.43 and 8,456.70 is: 12,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.93 : 42,260.43 = 8,456.70 : x
  2. Step 2: Convert to fraction form
    28,181.93/42,260.43 = 8,456.70/x
  3. Step 3: Cross multiply
    28,181.93x = 42,260.43 × 8,456.70
  4. Step 4: Simplify right side
    28,181.93x = 357,383,968.57
  5. Step 5: Solve for x
    x = 357,383,968.57/28,181.93
  6. Step 6: Final answer
    x = 12,681.32

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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.