Home / 28,787.27-43,148.07-13,172.09

Finding the Fourth Proportional to 28,787.27, 43,148.07 and 13,172.09

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Solution

The fourth proportional to 28,787.27, 43,148.07 and 13,172.09 is: 19,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787.27 : 43,148.07 = 13,172.09 : x
  2. Step 2: Convert to fraction form
    28,787.27/43,148.07 = 13,172.09/x
  3. Step 3: Cross multiply
    28,787.27x = 43,148.07 × 13,172.09
  4. Step 4: Simplify right side
    28,787.27x = 568,350,045.63
  5. Step 5: Solve for x
    x = 568,350,045.63/28,787.27
  6. Step 6: Final answer
    x = 19,743.11

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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.