Home / 20,313.33-28,031.71-11,361.84

Finding the Fourth Proportional to 20,313.33, 28,031.71 and 11,361.84

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Solution

The fourth proportional to 20,313.33, 28,031.71 and 11,361.84 is: 15,678.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.33 : 28,031.71 = 11,361.84 : x
  2. Step 2: Convert to fraction form
    20,313.33/28,031.71 = 11,361.84/x
  3. Step 3: Cross multiply
    20,313.33x = 28,031.71 × 11,361.84
  4. Step 4: Simplify right side
    20,313.33x = 318,491,803.95
  5. Step 5: Solve for x
    x = 318,491,803.95/20,313.33
  6. Step 6: Final answer
    x = 15,678.96

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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.