Home / 13,862.94-19,128.65-7,894.73

Finding the Fourth Proportional to 13,862.94, 19,128.65 and 7,894.73

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Solution

The fourth proportional to 13,862.94, 19,128.65 and 7,894.73 is: 10,893.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.94 : 19,128.65 = 7,894.73 : x
  2. Step 2: Convert to fraction form
    13,862.94/19,128.65 = 7,894.73/x
  3. Step 3: Cross multiply
    13,862.94x = 19,128.65 × 7,894.73
  4. Step 4: Simplify right side
    13,862.94x = 151,015,391.90
  5. Step 5: Solve for x
    x = 151,015,391.90/13,862.94
  6. Step 6: Final answer
    x = 10,893.46

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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.