Home / 28,620.14-39,493.83-15,872.13

Finding the Fourth Proportional to 28,620.14, 39,493.83 and 15,872.13

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Solution

The fourth proportional to 28,620.14, 39,493.83 and 15,872.13 is: 21,902.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.14 : 39,493.83 = 15,872.13 : x
  2. Step 2: Convert to fraction form
    28,620.14/39,493.83 = 15,872.13/x
  3. Step 3: Cross multiply
    28,620.14x = 39,493.83 × 15,872.13
  4. Step 4: Simplify right side
    28,620.14x = 626,851,063.12
  5. Step 5: Solve for x
    x = 626,851,063.12/28,620.14
  6. Step 6: Final answer
    x = 21,902.44

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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.