Home / 39,899.52-55,061.04-21,994.56

Finding the Fourth Proportional to 39,899.52, 55,061.04 and 21,994.56

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Solution

The fourth proportional to 39,899.52, 55,061.04 and 21,994.56 is: 30,352.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.52 : 55,061.04 = 21,994.56 : x
  2. Step 2: Convert to fraction form
    39,899.52/55,061.04 = 21,994.56/x
  3. Step 3: Cross multiply
    39,899.52x = 55,061.04 × 21,994.56
  4. Step 4: Simplify right side
    39,899.52x = 1,211,043,347.94
  5. Step 5: Solve for x
    x = 1,211,043,347.94/39,899.52
  6. Step 6: Final answer
    x = 30,352.33

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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.