Home / 11,286.07-16,931.39-7,777.76

Finding the Fourth Proportional to 11,286.07, 16,931.39 and 7,777.76

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Solution

The fourth proportional to 11,286.07, 16,931.39 and 7,777.76 is: 11,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,286.07 : 16,931.39 = 7,777.76 : x
  2. Step 2: Convert to fraction form
    11,286.07/16,931.39 = 7,777.76/x
  3. Step 3: Cross multiply
    11,286.07x = 16,931.39 × 7,777.76
  4. Step 4: Simplify right side
    11,286.07x = 131,688,164.34
  5. Step 5: Solve for x
    x = 131,688,164.34/11,286.07
  6. Step 6: Final answer
    x = 11,668.21

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1.5x scale

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.