Home / 39,688.28-54,768.94-21,783.16

Finding the Fourth Proportional to 39,688.28, 54,768.94 and 21,783.16

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Solution

The fourth proportional to 39,688.28, 54,768.94 and 21,783.16 is: 30,060.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.28 : 54,768.94 = 21,783.16 : x
  2. Step 2: Convert to fraction form
    39,688.28/54,768.94 = 21,783.16/x
  3. Step 3: Cross multiply
    39,688.28x = 54,768.94 × 21,783.16
  4. Step 4: Simplify right side
    39,688.28x = 1,193,040,583.05
  5. Step 5: Solve for x
    x = 1,193,040,583.05/39,688.28
  6. Step 6: Final answer
    x = 30,060.27

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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.