Home / 20,313.54-28,034.12-11,361.88

Finding the Fourth Proportional to 20,313.54, 28,034.12 and 11,361.88

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Solution

The fourth proportional to 20,313.54, 28,034.12 and 11,361.88 is: 15,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.54 : 28,034.12 = 11,361.88 : x
  2. Step 2: Convert to fraction form
    20,313.54/28,034.12 = 11,361.88/x
  3. Step 3: Cross multiply
    20,313.54x = 28,034.12 × 11,361.88
  4. Step 4: Simplify right side
    20,313.54x = 318,520,307.35
  5. Step 5: Solve for x
    x = 318,520,307.35/20,313.54
  6. Step 6: Final answer
    x = 15,680.20

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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.