Home / 39,899.12-55,063.46-21,994.13

Finding the Fourth Proportional to 39,899.12, 55,063.46 and 21,994.13

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Solution

The fourth proportional to 39,899.12, 55,063.46 and 21,994.13 is: 30,353.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.12 : 55,063.46 = 21,994.13 : x
  2. Step 2: Convert to fraction form
    39,899.12/55,063.46 = 21,994.13/x
  3. Step 3: Cross multiply
    39,899.12x = 55,063.46 × 21,994.13
  4. Step 4: Simplify right side
    39,899.12x = 1,211,073,090.13
  5. Step 5: Solve for x
    x = 1,211,073,090.13/39,899.12
  6. Step 6: Final answer
    x = 30,353.38

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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.