Home / 19,205.67-28,821.57-11,787.49

Finding the Fourth Proportional to 19,205.67, 28,821.57 and 11,787.49

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Solution

The fourth proportional to 19,205.67, 28,821.57 and 11,787.49 is: 17,689.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,205.67 : 28,821.57 = 11,787.49 : x
  2. Step 2: Convert to fraction form
    19,205.67/28,821.57 = 11,787.49/x
  3. Step 3: Cross multiply
    19,205.67x = 28,821.57 × 11,787.49
  4. Step 4: Simplify right side
    19,205.67x = 339,733,968.16
  5. Step 5: Solve for x
    x = 339,733,968.16/19,205.67
  6. Step 6: Final answer
    x = 17,689.25

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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.