Home / 11,207.75-15,466.39-6,428.50

Finding the Fourth Proportional to 11,207.75, 15,466.39 and 6,428.50

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Solution

The fourth proportional to 11,207.75, 15,466.39 and 6,428.50 is: 8,871.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,207.75 : 15,466.39 = 6,428.50 : x
  2. Step 2: Convert to fraction form
    11,207.75/15,466.39 = 6,428.50/x
  3. Step 3: Cross multiply
    11,207.75x = 15,466.39 × 6,428.50
  4. Step 4: Simplify right side
    11,207.75x = 99,425,669.54
  5. Step 5: Solve for x
    x = 99,425,669.54/11,207.75
  6. Step 6: Final answer
    x = 8,871.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.