Home / 20,162.17-30,249.40-10,308.36

Finding the Fourth Proportional to 20,162.17, 30,249.40 and 10,308.36

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Solution

The fourth proportional to 20,162.17, 30,249.40 and 10,308.36 is: 15,465.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.17 : 30,249.40 = 10,308.36 : x
  2. Step 2: Convert to fraction form
    20,162.17/30,249.40 = 10,308.36/x
  3. Step 3: Cross multiply
    20,162.17x = 30,249.40 × 10,308.36
  4. Step 4: Simplify right side
    20,162.17x = 311,821,811.98
  5. Step 5: Solve for x
    x = 311,821,811.98/20,162.17
  6. Step 6: Final answer
    x = 15,465.69

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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.