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Finding the Fourth Proportional to 18,676.65, 28,014.86 and 7,583.23

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Solution

The fourth proportional to 18,676.65, 28,014.86 and 7,583.23 is: 11,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.65 : 28,014.86 = 7,583.23 : x
  2. Step 2: Convert to fraction form
    18,676.65/28,014.86 = 7,583.23/x
  3. Step 3: Cross multiply
    18,676.65x = 28,014.86 × 7,583.23
  4. Step 4: Simplify right side
    18,676.65x = 212,443,018.84
  5. Step 5: Solve for x
    x = 212,443,018.84/18,676.65
  6. Step 6: Final answer
    x = 11,374.79

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1.5x scale

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.