Home / 10,968.56-15,120.45-7,771.98

Finding the Fourth Proportional to 10,968.56, 15,120.45 and 7,771.98

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Solution

The fourth proportional to 10,968.56, 15,120.45 and 7,771.98 is: 10,713.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,968.56 : 15,120.45 = 7,771.98 : x
  2. Step 2: Convert to fraction form
    10,968.56/15,120.45 = 7,771.98/x
  3. Step 3: Cross multiply
    10,968.56x = 15,120.45 × 7,771.98
  4. Step 4: Simplify right side
    10,968.56x = 117,515,742.26
  5. Step 5: Solve for x
    x = 117,515,742.26/10,968.56
  6. Step 6: Final answer
    x = 10,713.87

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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.