Home / 39,086.57-58,640.79-12,809.76

Finding the Fourth Proportional to 39,086.57, 58,640.79 and 12,809.76

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Solution

The fourth proportional to 39,086.57, 58,640.79 and 12,809.76 is: 19,218.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,086.57 : 58,640.79 = 12,809.76 : x
  2. Step 2: Convert to fraction form
    39,086.57/58,640.79 = 12,809.76/x
  3. Step 3: Cross multiply
    39,086.57x = 58,640.79 × 12,809.76
  4. Step 4: Simplify right side
    39,086.57x = 751,174,446.11
  5. Step 5: Solve for x
    x = 751,174,446.11/39,086.57
  6. Step 6: Final answer
    x = 19,218.23

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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.