Home / 39,738.84-54,833.64-21,834.60

Finding the Fourth Proportional to 39,738.84, 54,833.64 and 21,834.60

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Solution

The fourth proportional to 39,738.84, 54,833.64 and 21,834.60 is: 30,128.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,738.84 : 54,833.64 = 21,834.60 : x
  2. Step 2: Convert to fraction form
    39,738.84/54,833.64 = 21,834.60/x
  3. Step 3: Cross multiply
    39,738.84x = 54,833.64 × 21,834.60
  4. Step 4: Simplify right side
    39,738.84x = 1,197,270,595.94
  5. Step 5: Solve for x
    x = 1,197,270,595.94/39,738.84
  6. Step 6: Final answer
    x = 30,128.47

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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.