Home / 39,719.70-54,813.51-21,814.92

Finding the Fourth Proportional to 39,719.70, 54,813.51 and 21,814.92

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Solution

The fourth proportional to 39,719.70, 54,813.51 and 21,814.92 is: 30,104.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.70 : 54,813.51 = 21,814.92 : x
  2. Step 2: Convert to fraction form
    39,719.70/54,813.51 = 21,814.92/x
  3. Step 3: Cross multiply
    39,719.70x = 54,813.51 × 21,814.92
  4. Step 4: Simplify right side
    39,719.70x = 1,195,752,335.57
  5. Step 5: Solve for x
    x = 1,195,752,335.57/39,719.70
  6. Step 6: Final answer
    x = 30,104.77

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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.