Home / 28,451.42-42,696.17-11,811.47

Finding the Fourth Proportional to 28,451.42, 42,696.17 and 11,811.47

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Solution

The fourth proportional to 28,451.42, 42,696.17 and 11,811.47 is: 17,725.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.42 : 42,696.17 = 11,811.47 : x
  2. Step 2: Convert to fraction form
    28,451.42/42,696.17 = 11,811.47/x
  3. Step 3: Cross multiply
    28,451.42x = 42,696.17 × 11,811.47
  4. Step 4: Simplify right side
    28,451.42x = 504,304,369.26
  5. Step 5: Solve for x
    x = 504,304,369.26/28,451.42
  6. Step 6: Final answer
    x = 17,725.10

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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.