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Finding the Fourth Proportional to 9,021.85, 12,504.74 and 8,502.74

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Solution

The fourth proportional to 9,021.85, 12,504.74 and 8,502.74 is: 11,785.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,021.85 : 12,504.74 = 8,502.74 : x
  2. Step 2: Convert to fraction form
    9,021.85/12,504.74 = 8,502.74/x
  3. Step 3: Cross multiply
    9,021.85x = 12,504.74 × 8,502.74
  4. Step 4: Simplify right side
    9,021.85x = 106,324,552.99
  5. Step 5: Solve for x
    x = 106,324,552.99/9,021.85
  6. Step 6: Final answer
    x = 11,785.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.