Home / 11,379.80-17,055.12-8,777.28

Finding the Fourth Proportional to 11,379.80, 17,055.12 and 8,777.28

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Solution

The fourth proportional to 11,379.80, 17,055.12 and 8,777.28 is: 13,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,379.80 : 17,055.12 = 8,777.28 : x
  2. Step 2: Convert to fraction form
    11,379.80/17,055.12 = 8,777.28/x
  3. Step 3: Cross multiply
    11,379.80x = 17,055.12 × 8,777.28
  4. Step 4: Simplify right side
    11,379.80x = 149,697,563.67
  5. Step 5: Solve for x
    x = 149,697,563.67/11,379.80
  6. Step 6: Final answer
    x = 13,154.67

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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.