Home / 39,918.21-55,086.04-22,012.89

Finding the Fourth Proportional to 39,918.21, 55,086.04 and 22,012.89

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Solution

The fourth proportional to 39,918.21, 55,086.04 and 22,012.89 is: 30,377.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,918.21 : 55,086.04 = 22,012.89 : x
  2. Step 2: Convert to fraction form
    39,918.21/55,086.04 = 22,012.89/x
  3. Step 3: Cross multiply
    39,918.21x = 55,086.04 × 22,012.89
  4. Step 4: Simplify right side
    39,918.21x = 1,212,602,939.06
  5. Step 5: Solve for x
    x = 1,212,602,939.06/39,918.21
  6. Step 6: Final answer
    x = 30,377.19

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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.