Home / 39,455.39-54,447.55-21,550.46

Finding the Fourth Proportional to 39,455.39, 54,447.55 and 21,550.46

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Solution

The fourth proportional to 39,455.39, 54,447.55 and 21,550.46 is: 29,739.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,455.39 : 54,447.55 = 21,550.46 : x
  2. Step 2: Convert to fraction form
    39,455.39/54,447.55 = 21,550.46/x
  3. Step 3: Cross multiply
    39,455.39x = 54,447.55 × 21,550.46
  4. Step 4: Simplify right side
    39,455.39x = 1,173,369,476.14
  5. Step 5: Solve for x
    x = 1,173,369,476.14/39,455.39
  6. Step 6: Final answer
    x = 29,739.15

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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.