Home / 10,778.90-16,162.88-4,930.50

Finding the Fourth Proportional to 10,778.90, 16,162.88 and 4,930.50

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Solution

The fourth proportional to 10,778.90, 16,162.88 and 4,930.50 is: 7,393.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,778.90 : 16,162.88 = 4,930.50 : x
  2. Step 2: Convert to fraction form
    10,778.90/16,162.88 = 4,930.50/x
  3. Step 3: Cross multiply
    10,778.90x = 16,162.88 × 4,930.50
  4. Step 4: Simplify right side
    10,778.90x = 79,691,055.19
  5. Step 5: Solve for x
    x = 79,691,055.19/10,778.90
  6. Step 6: Final answer
    x = 7,393.24

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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.