Home / 39,986.74-55,180.89-22,080.70

Finding the Fourth Proportional to 39,986.74, 55,180.89 and 22,080.70

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Solution

The fourth proportional to 39,986.74, 55,180.89 and 22,080.70 is: 30,470.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,986.74 : 55,180.89 = 22,080.70 : x
  2. Step 2: Convert to fraction form
    39,986.74/55,180.89 = 22,080.70/x
  3. Step 3: Cross multiply
    39,986.74x = 55,180.89 × 22,080.70
  4. Step 4: Simplify right side
    39,986.74x = 1,218,432,677.82
  5. Step 5: Solve for x
    x = 1,218,432,677.82/39,986.74
  6. Step 6: Final answer
    x = 30,470.92

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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.