Home / 19,010.49-28,513.31-7,915.11

Finding the Fourth Proportional to 19,010.49, 28,513.31 and 7,915.11

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Solution

The fourth proportional to 19,010.49, 28,513.31 and 7,915.11 is: 11,871.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.49 : 28,513.31 = 7,915.11 : x
  2. Step 2: Convert to fraction form
    19,010.49/28,513.31 = 7,915.11/x
  3. Step 3: Cross multiply
    19,010.49x = 28,513.31 × 7,915.11
  4. Step 4: Simplify right side
    19,010.49x = 225,685,945.54
  5. Step 5: Solve for x
    x = 225,685,945.54/19,010.49
  6. Step 6: Final answer
    x = 11,871.65

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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.