Home / 20,271.32-30,401.22-7,790.48

Finding the Fourth Proportional to 20,271.32, 30,401.22 and 7,790.48

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Solution

The fourth proportional to 20,271.32, 30,401.22 and 7,790.48 is: 11,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.32 : 30,401.22 = 7,790.48 : x
  2. Step 2: Convert to fraction form
    20,271.32/30,401.22 = 7,790.48/x
  3. Step 3: Cross multiply
    20,271.32x = 30,401.22 × 7,790.48
  4. Step 4: Simplify right side
    20,271.32x = 236,840,096.39
  5. Step 5: Solve for x
    x = 236,840,096.39/20,271.32
  6. Step 6: Final answer
    x = 11,683.51

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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.