Home / 39,220.36-54,128.82-22,453

Finding the Fourth Proportional to 39,220.36, 54,128.82 and 22,453

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Solution

The fourth proportional to 39,220.36, 54,128.82 and 22,453 is: 30,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,220.36 : 54,128.82 = 22,453 : x
  2. Step 2: Convert to fraction form
    39,220.36/54,128.82 = 22,453/x
  3. Step 3: Cross multiply
    39,220.36x = 54,128.82 × 22,453
  4. Step 4: Simplify right side
    39,220.36x = 1,215,354,395.46
  5. Step 5: Solve for x
    x = 1,215,354,395.46/39,220.36
  6. Step 6: Final answer
    x = 30,987.84

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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.