Home / 28,205.34-38,877.69-19,127.70

Finding the Fourth Proportional to 28,205.34, 38,877.69 and 19,127.70

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Solution

The fourth proportional to 28,205.34, 38,877.69 and 19,127.70 is: 26,365.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.34 : 38,877.69 = 19,127.70 : x
  2. Step 2: Convert to fraction form
    28,205.34/38,877.69 = 19,127.70/x
  3. Step 3: Cross multiply
    28,205.34x = 38,877.69 × 19,127.70
  4. Step 4: Simplify right side
    28,205.34x = 743,640,791.01
  5. Step 5: Solve for x
    x = 743,640,791.01/28,205.34
  6. Step 6: Final answer
    x = 26,365.25

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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.