Home / 18,475.89-27,713.58-12,538.05

Finding the Fourth Proportional to 18,475.89, 27,713.58 and 12,538.05

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Solution

The fourth proportional to 18,475.89, 27,713.58 and 12,538.05 is: 18,806.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,475.89 : 27,713.58 = 12,538.05 : x
  2. Step 2: Convert to fraction form
    18,475.89/27,713.58 = 12,538.05/x
  3. Step 3: Cross multiply
    18,475.89x = 27,713.58 × 12,538.05
  4. Step 4: Simplify right side
    18,475.89x = 347,474,251.72
  5. Step 5: Solve for x
    x = 347,474,251.72/18,475.89
  6. Step 6: Final answer
    x = 18,806.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.