Home / 31,857.32-43,942.74-20,541.32

Finding the Fourth Proportional to 31,857.32, 43,942.74 and 20,541.32

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Solution

The fourth proportional to 31,857.32, 43,942.74 and 20,541.32 is: 28,333.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,857.32 : 43,942.74 = 20,541.32 : x
  2. Step 2: Convert to fraction form
    31,857.32/43,942.74 = 20,541.32/x
  3. Step 3: Cross multiply
    31,857.32x = 43,942.74 × 20,541.32
  4. Step 4: Simplify right side
    31,857.32x = 902,641,884.02
  5. Step 5: Solve for x
    x = 902,641,884.02/31,857.32
  6. Step 6: Final answer
    x = 28,333.89

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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.