Home / 39,903.97-55,066.38-21,998.98

Finding the Fourth Proportional to 39,903.97, 55,066.38 and 21,998.98

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Solution

The fourth proportional to 39,903.97, 55,066.38 and 21,998.98 is: 30,357.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.97 : 55,066.38 = 21,998.98 : x
  2. Step 2: Convert to fraction form
    39,903.97/55,066.38 = 21,998.98/x
  3. Step 3: Cross multiply
    39,903.97x = 55,066.38 × 21,998.98
  4. Step 4: Simplify right side
    39,903.97x = 1,211,404,192.29
  5. Step 5: Solve for x
    x = 1,211,404,192.29/39,903.97
  6. Step 6: Final answer
    x = 30,357.99

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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.