Home / 39,899.88-55,060.78-21,994.96

Finding the Fourth Proportional to 39,899.88, 55,060.78 and 21,994.96

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Solution

The fourth proportional to 39,899.88, 55,060.78 and 21,994.96 is: 30,352.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.88 : 55,060.78 = 21,994.96 : x
  2. Step 2: Convert to fraction form
    39,899.88/55,060.78 = 21,994.96/x
  3. Step 3: Cross multiply
    39,899.88x = 55,060.78 × 21,994.96
  4. Step 4: Simplify right side
    39,899.88x = 1,211,059,653.67
  5. Step 5: Solve for x
    x = 1,211,059,653.67/39,899.88
  6. Step 6: Final answer
    x = 30,352.46

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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.