Home / 39,455.18-54,447.80-21,550.19

Finding the Fourth Proportional to 39,455.18, 54,447.80 and 21,550.19

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Solution

The fourth proportional to 39,455.18, 54,447.80 and 21,550.19 is: 29,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,455.18 : 54,447.80 = 21,550.19 : x
  2. Step 2: Convert to fraction form
    39,455.18/54,447.80 = 21,550.19/x
  3. Step 3: Cross multiply
    39,455.18x = 54,447.80 × 21,550.19
  4. Step 4: Simplify right side
    39,455.18x = 1,173,360,055.09
  5. Step 5: Solve for x
    x = 1,173,360,055.09/39,455.18
  6. Step 6: Final answer
    x = 29,739.06

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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.