Home / 20,905.88-31,342.23-7,576.79

Finding the Fourth Proportional to 20,905.88, 31,342.23 and 7,576.79

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Solution

The fourth proportional to 20,905.88, 31,342.23 and 7,576.79 is: 11,359.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.88 : 31,342.23 = 7,576.79 : x
  2. Step 2: Convert to fraction form
    20,905.88/31,342.23 = 7,576.79/x
  3. Step 3: Cross multiply
    20,905.88x = 31,342.23 × 7,576.79
  4. Step 4: Simplify right side
    20,905.88x = 237,473,338.13
  5. Step 5: Solve for x
    x = 237,473,338.13/20,905.88
  6. Step 6: Final answer
    x = 11,359.17

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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.