Home / 39,987.81-55,184.04-22,083.96

Finding the Fourth Proportional to 39,987.81, 55,184.04 and 22,083.96

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Solution

The fourth proportional to 39,987.81, 55,184.04 and 22,083.96 is: 30,476.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.81 : 55,184.04 = 22,083.96 : x
  2. Step 2: Convert to fraction form
    39,987.81/55,184.04 = 22,083.96/x
  3. Step 3: Cross multiply
    39,987.81x = 55,184.04 × 22,083.96
  4. Step 4: Simplify right side
    39,987.81x = 1,218,682,132.00
  5. Step 5: Solve for x
    x = 1,218,682,132.00/39,987.81
  6. Step 6: Final answer
    x = 30,476.34

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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.