Home / 39,455.15-54,447.23-21,550.21

Finding the Fourth Proportional to 39,455.15, 54,447.23 and 21,550.21

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Solution

The fourth proportional to 39,455.15, 54,447.23 and 21,550.21 is: 29,738.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,455.15 : 54,447.23 = 21,550.21 : x
  2. Step 2: Convert to fraction form
    39,455.15/54,447.23 = 21,550.21/x
  3. Step 3: Cross multiply
    39,455.15x = 54,447.23 × 21,550.21
  4. Step 4: Simplify right side
    39,455.15x = 1,173,349,158.18
  5. Step 5: Solve for x
    x = 1,173,349,158.18/39,455.15
  6. Step 6: Final answer
    x = 29,738.81

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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.