Home / 20,627.30-28,465.70-11,195.87

Finding the Fourth Proportional to 20,627.30, 28,465.70 and 11,195.87

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Solution

The fourth proportional to 20,627.30, 28,465.70 and 11,195.87 is: 15,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.30 : 28,465.70 = 11,195.87 : x
  2. Step 2: Convert to fraction form
    20,627.30/28,465.70 = 11,195.87/x
  3. Step 3: Cross multiply
    20,627.30x = 28,465.70 × 11,195.87
  4. Step 4: Simplify right side
    20,627.30x = 318,698,078.35
  5. Step 5: Solve for x
    x = 318,698,078.35/20,627.30
  6. Step 6: Final answer
    x = 15,450.31

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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.