Home / 31,700.05-43,745.78-18,271.01

Finding the Fourth Proportional to 31,700.05, 43,745.78 and 18,271.01

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Solution

The fourth proportional to 31,700.05, 43,745.78 and 18,271.01 is: 25,213.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,700.05 : 43,745.78 = 18,271.01 : x
  2. Step 2: Convert to fraction form
    31,700.05/43,745.78 = 18,271.01/x
  3. Step 3: Cross multiply
    31,700.05x = 43,745.78 × 18,271.01
  4. Step 4: Simplify right side
    31,700.05x = 799,279,583.84
  5. Step 5: Solve for x
    x = 799,279,583.84/31,700.05
  6. Step 6: Final answer
    x = 25,213.83

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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.