Home / 38,639.07-57,936.38-20,605.05

Finding the Fourth Proportional to 38,639.07, 57,936.38 and 20,605.05

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Solution

The fourth proportional to 38,639.07, 57,936.38 and 20,605.05 is: 30,895.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.07 : 57,936.38 = 20,605.05 : x
  2. Step 2: Convert to fraction form
    38,639.07/57,936.38 = 20,605.05/x
  3. Step 3: Cross multiply
    38,639.07x = 57,936.38 × 20,605.05
  4. Step 4: Simplify right side
    38,639.07x = 1,193,781,903.69
  5. Step 5: Solve for x
    x = 1,193,781,903.69/38,639.07
  6. Step 6: Final answer
    x = 30,895.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.