Home / 20,512.10-28,311.96-13,359.83

Finding the Fourth Proportional to 20,512.10, 28,311.96 and 13,359.83

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Solution

The fourth proportional to 20,512.10, 28,311.96 and 13,359.83 is: 18,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.10 : 28,311.96 = 13,359.83 : x
  2. Step 2: Convert to fraction form
    20,512.10/28,311.96 = 13,359.83/x
  3. Step 3: Cross multiply
    20,512.10x = 28,311.96 × 13,359.83
  4. Step 4: Simplify right side
    20,512.10x = 378,243,096.43
  5. Step 5: Solve for x
    x = 378,243,096.43/20,512.10
  6. Step 6: Final answer
    x = 18,440.00

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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.