Home / 22,790.45-31,452.41-12,720.86

Finding the Fourth Proportional to 22,790.45, 31,452.41 and 12,720.86

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Solution

The fourth proportional to 22,790.45, 31,452.41 and 12,720.86 is: 17,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,790.45 : 31,452.41 = 12,720.86 : x
  2. Step 2: Convert to fraction form
    22,790.45/31,452.41 = 12,720.86/x
  3. Step 3: Cross multiply
    22,790.45x = 31,452.41 × 12,720.86
  4. Step 4: Simplify right side
    22,790.45x = 400,101,640.67
  5. Step 5: Solve for x
    x = 400,101,640.67/22,790.45
  6. Step 6: Final answer
    x = 17,555.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.