Home / 20,313.50-28,035.23-11,361.49

Finding the Fourth Proportional to 20,313.50, 28,035.23 and 11,361.49

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Solution

The fourth proportional to 20,313.50, 28,035.23 and 11,361.49 is: 15,680.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.50 : 28,035.23 = 11,361.49 : x
  2. Step 2: Convert to fraction form
    20,313.50/28,035.23 = 11,361.49/x
  3. Step 3: Cross multiply
    20,313.50x = 28,035.23 × 11,361.49
  4. Step 4: Simplify right side
    20,313.50x = 318,521,858.40
  5. Step 5: Solve for x
    x = 318,521,858.40/20,313.50
  6. Step 6: Final answer
    x = 15,680.31

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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.