Home / 39,455.51-54,448.32-21,550.52

Finding the Fourth Proportional to 39,455.51, 54,448.32 and 21,550.52

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Solution

The fourth proportional to 39,455.51, 54,448.32 and 21,550.52 is: 29,739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,455.51 : 54,448.32 = 21,550.52 : x
  2. Step 2: Convert to fraction form
    39,455.51/54,448.32 = 21,550.52/x
  3. Step 3: Cross multiply
    39,455.51x = 54,448.32 × 21,550.52
  4. Step 4: Simplify right side
    39,455.51x = 1,173,389,609.13
  5. Step 5: Solve for x
    x = 1,173,389,609.13/39,455.51
  6. Step 6: Final answer
    x = 29,739.56

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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.