Home / 28,728.23-39,645.77-15,981.82

Finding the Fourth Proportional to 28,728.23, 39,645.77 and 15,981.82

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Solution

The fourth proportional to 28,728.23, 39,645.77 and 15,981.82 is: 22,055.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.23 : 39,645.77 = 15,981.82 : x
  2. Step 2: Convert to fraction form
    28,728.23/39,645.77 = 15,981.82/x
  3. Step 3: Cross multiply
    28,728.23x = 39,645.77 × 15,981.82
  4. Step 4: Simplify right side
    28,728.23x = 633,611,479.99
  5. Step 5: Solve for x
    x = 633,611,479.99/28,728.23
  6. Step 6: Final answer
    x = 22,055.36

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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.