Home / 20,627.34-28,465.56-11,195.90

Finding the Fourth Proportional to 20,627.34, 28,465.56 and 11,195.90

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Solution

The fourth proportional to 20,627.34, 28,465.56 and 11,195.90 is: 15,450.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.34 : 28,465.56 = 11,195.90 : x
  2. Step 2: Convert to fraction form
    20,627.34/28,465.56 = 11,195.90/x
  3. Step 3: Cross multiply
    20,627.34x = 28,465.56 × 11,195.90
  4. Step 4: Simplify right side
    20,627.34x = 318,697,563.20
  5. Step 5: Solve for x
    x = 318,697,563.20/20,627.34
  6. Step 6: Final answer
    x = 15,450.25

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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.