Home / 12,882.79-19,331.49-5,486.50

Finding the Fourth Proportional to 12,882.79, 19,331.49 and 5,486.50

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Solution

The fourth proportional to 12,882.79, 19,331.49 and 5,486.50 is: 8,232.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.79 : 19,331.49 = 5,486.50 : x
  2. Step 2: Convert to fraction form
    12,882.79/19,331.49 = 5,486.50/x
  3. Step 3: Cross multiply
    12,882.79x = 19,331.49 × 5,486.50
  4. Step 4: Simplify right side
    12,882.79x = 106,062,219.89
  5. Step 5: Solve for x
    x = 106,062,219.89/12,882.79
  6. Step 6: Final answer
    x = 8,232.86

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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.