Home / 30,628.16-45,954.66-20,761.82

Finding the Fourth Proportional to 30,628.16, 45,954.66 and 20,761.82

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Solution

The fourth proportional to 30,628.16, 45,954.66 and 20,761.82 is: 31,151.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.16 : 45,954.66 = 20,761.82 : x
  2. Step 2: Convert to fraction form
    30,628.16/45,954.66 = 20,761.82/x
  3. Step 3: Cross multiply
    30,628.16x = 45,954.66 × 20,761.82
  4. Step 4: Simplify right side
    30,628.16x = 954,102,379.08
  5. Step 5: Solve for x
    x = 954,102,379.08/30,628.16
  6. Step 6: Final answer
    x = 31,151.15

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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.