Home / 38,909.58-58,358.70-20,133.78

Finding the Fourth Proportional to 38,909.58, 58,358.70 and 20,133.78

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Solution

The fourth proportional to 38,909.58, 58,358.70 and 20,133.78 is: 30,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,909.58 : 58,358.70 = 20,133.78 : x
  2. Step 2: Convert to fraction form
    38,909.58/58,358.70 = 20,133.78/x
  3. Step 3: Cross multiply
    38,909.58x = 58,358.70 × 20,133.78
  4. Step 4: Simplify right side
    38,909.58x = 1,174,981,226.89
  5. Step 5: Solve for x
    x = 1,174,981,226.89/38,909.58
  6. Step 6: Final answer
    x = 30,197.74

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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.