Home / 31,475.70-43,425.36-20,147.04

Finding the Fourth Proportional to 31,475.70, 43,425.36 and 20,147.04

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Solution

The fourth proportional to 31,475.70, 43,425.36 and 20,147.04 is: 27,795.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,475.70 : 43,425.36 = 20,147.04 : x
  2. Step 2: Convert to fraction form
    31,475.70/43,425.36 = 20,147.04/x
  3. Step 3: Cross multiply
    31,475.70x = 43,425.36 × 20,147.04
  4. Step 4: Simplify right side
    31,475.70x = 874,892,464.93
  5. Step 5: Solve for x
    x = 874,892,464.93/31,475.70
  6. Step 6: Final answer
    x = 27,795.81

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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.