Home / 20,162.36-30,249.68-10,308.56

Finding the Fourth Proportional to 20,162.36, 30,249.68 and 10,308.56

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Solution

The fourth proportional to 20,162.36, 30,249.68 and 10,308.56 is: 15,465.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.36 : 30,249.68 = 10,308.56 : x
  2. Step 2: Convert to fraction form
    20,162.36/30,249.68 = 10,308.56/x
  3. Step 3: Cross multiply
    20,162.36x = 30,249.68 × 10,308.56
  4. Step 4: Simplify right side
    20,162.36x = 311,830,490.01
  5. Step 5: Solve for x
    x = 311,830,490.01/20,162.36
  6. Step 6: Final answer
    x = 15,465.98

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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.