Home / 18,942.56-26,140.20-11,872.88

Finding the Fourth Proportional to 18,942.56, 26,140.20 and 11,872.88

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Solution

The fourth proportional to 18,942.56, 26,140.20 and 11,872.88 is: 16,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,942.56 : 26,140.20 = 11,872.88 : x
  2. Step 2: Convert to fraction form
    18,942.56/26,140.20 = 11,872.88/x
  3. Step 3: Cross multiply
    18,942.56x = 26,140.20 × 11,872.88
  4. Step 4: Simplify right side
    18,942.56x = 310,359,457.78
  5. Step 5: Solve for x
    x = 310,359,457.78/18,942.56
  6. Step 6: Final answer
    x = 16,384.24

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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.