Home / 20,721.66-31,087.14-7,573.70

Finding the Fourth Proportional to 20,721.66, 31,087.14 and 7,573.70

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Solution

The fourth proportional to 20,721.66, 31,087.14 and 7,573.70 is: 11,362.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.66 : 31,087.14 = 7,573.70 : x
  2. Step 2: Convert to fraction form
    20,721.66/31,087.14 = 7,573.70/x
  3. Step 3: Cross multiply
    20,721.66x = 31,087.14 × 7,573.70
  4. Step 4: Simplify right side
    20,721.66x = 235,444,672.22
  5. Step 5: Solve for x
    x = 235,444,672.22/20,721.66
  6. Step 6: Final answer
    x = 11,362.25

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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.