Home / 12,486.76-18,728.25-4,693.75

Finding the Fourth Proportional to 12,486.76, 18,728.25 and 4,693.75

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Solution

The fourth proportional to 12,486.76, 18,728.25 and 4,693.75 is: 7,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.76 : 18,728.25 = 4,693.75 : x
  2. Step 2: Convert to fraction form
    12,486.76/18,728.25 = 4,693.75/x
  3. Step 3: Cross multiply
    12,486.76x = 18,728.25 × 4,693.75
  4. Step 4: Simplify right side
    12,486.76x = 87,905,723.44
  5. Step 5: Solve for x
    x = 87,905,723.44/12,486.76
  6. Step 6: Final answer
    x = 7,039.91

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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.