Home / 39,914.85-55,078.26-22,008.78

Finding the Fourth Proportional to 39,914.85, 55,078.26 and 22,008.78

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Solution

The fourth proportional to 39,914.85, 55,078.26 and 22,008.78 is: 30,369.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,914.85 : 55,078.26 = 22,008.78 : x
  2. Step 2: Convert to fraction form
    39,914.85/55,078.26 = 22,008.78/x
  3. Step 3: Cross multiply
    39,914.85x = 55,078.26 × 22,008.78
  4. Step 4: Simplify right side
    39,914.85x = 1,212,205,307.12
  5. Step 5: Solve for x
    x = 1,212,205,307.12/39,914.85
  6. Step 6: Final answer
    x = 30,369.78

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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.