Home / 39,194.87-54,088.40-21,290.45

Finding the Fourth Proportional to 39,194.87, 54,088.40 and 21,290.45

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Solution

The fourth proportional to 39,194.87, 54,088.40 and 21,290.45 is: 29,380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,194.87 : 54,088.40 = 21,290.45 : x
  2. Step 2: Convert to fraction form
    39,194.87/54,088.40 = 21,290.45/x
  3. Step 3: Cross multiply
    39,194.87x = 54,088.40 × 21,290.45
  4. Step 4: Simplify right side
    39,194.87x = 1,151,566,158.56
  5. Step 5: Solve for x
    x = 1,151,566,158.56/39,194.87
  6. Step 6: Final answer
    x = 29,380.54

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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.