Home / 20,683.05-31,040.22-15,150.78

Finding the Fourth Proportional to 20,683.05, 31,040.22 and 15,150.78

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Solution

The fourth proportional to 20,683.05, 31,040.22 and 15,150.78 is: 22,737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.05 : 31,040.22 = 15,150.78 : x
  2. Step 2: Convert to fraction form
    20,683.05/31,040.22 = 15,150.78/x
  3. Step 3: Cross multiply
    20,683.05x = 31,040.22 × 15,150.78
  4. Step 4: Simplify right side
    20,683.05x = 470,283,544.37
  5. Step 5: Solve for x
    x = 470,283,544.37/20,683.05
  6. Step 6: Final answer
    x = 22,737.63

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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.