Home / 11,179.50-15,421.29-6,980.46

Finding the Fourth Proportional to 11,179.50, 15,421.29 and 6,980.46

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Solution

The fourth proportional to 11,179.50, 15,421.29 and 6,980.46 is: 9,629.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.50 : 15,421.29 = 6,980.46 : x
  2. Step 2: Convert to fraction form
    11,179.50/15,421.29 = 6,980.46/x
  3. Step 3: Cross multiply
    11,179.50x = 15,421.29 × 6,980.46
  4. Step 4: Simplify right side
    11,179.50x = 107,647,697.99
  5. Step 5: Solve for x
    x = 107,647,697.99/11,179.50
  6. Step 6: Final answer
    x = 9,629.03

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1.5x scale

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.