Home / 20,448.28-30,677.80-6,408.76

Finding the Fourth Proportional to 20,448.28, 30,677.80 and 6,408.76

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Solution

The fourth proportional to 20,448.28, 30,677.80 and 6,408.76 is: 9,614.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.28 : 30,677.80 = 6,408.76 : x
  2. Step 2: Convert to fraction form
    20,448.28/30,677.80 = 6,408.76/x
  3. Step 3: Cross multiply
    20,448.28x = 30,677.80 × 6,408.76
  4. Step 4: Simplify right side
    20,448.28x = 196,606,794.35
  5. Step 5: Solve for x
    x = 196,606,794.35/20,448.28
  6. Step 6: Final answer
    x = 9,614.83

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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.