Home / 39,033.36-53,866.18-21,128.37

Finding the Fourth Proportional to 39,033.36, 53,866.18 and 21,128.37

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Solution

The fourth proportional to 39,033.36, 53,866.18 and 21,128.37 is: 29,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.36 : 53,866.18 = 21,128.37 : x
  2. Step 2: Convert to fraction form
    39,033.36/53,866.18 = 21,128.37/x
  3. Step 3: Cross multiply
    39,033.36x = 53,866.18 × 21,128.37
  4. Step 4: Simplify right side
    39,033.36x = 1,138,104,581.53
  5. Step 5: Solve for x
    x = 1,138,104,581.53/39,033.36
  6. Step 6: Final answer
    x = 29,157.23

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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.