Home / 31,576.11-43,576.83-18,825.90

Finding the Fourth Proportional to 31,576.11, 43,576.83 and 18,825.90

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Solution

The fourth proportional to 31,576.11, 43,576.83 and 18,825.90 is: 25,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,576.11 : 43,576.83 = 18,825.90 : x
  2. Step 2: Convert to fraction form
    31,576.11/43,576.83 = 18,825.90/x
  3. Step 3: Cross multiply
    31,576.11x = 43,576.83 × 18,825.90
  4. Step 4: Simplify right side
    31,576.11x = 820,373,043.90
  5. Step 5: Solve for x
    x = 820,373,043.90/31,576.11
  6. Step 6: Final answer
    x = 25,980.81

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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.