Home / 12,576.84-18,867.99-4,678.12

Finding the Fourth Proportional to 12,576.84, 18,867.99 and 4,678.12

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Solution

The fourth proportional to 12,576.84, 18,867.99 and 4,678.12 is: 7,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576.84 : 18,867.99 = 4,678.12 : x
  2. Step 2: Convert to fraction form
    12,576.84/18,867.99 = 4,678.12/x
  3. Step 3: Cross multiply
    12,576.84x = 18,867.99 × 4,678.12
  4. Step 4: Simplify right side
    12,576.84x = 88,266,721.38
  5. Step 5: Solve for x
    x = 88,266,721.38/12,576.84
  6. Step 6: Final answer
    x = 7,018.20

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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.