Home / 13,862.21-19,129.97-7,893.79

Finding the Fourth Proportional to 13,862.21, 19,129.97 and 7,893.79

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Solution

The fourth proportional to 13,862.21, 19,129.97 and 7,893.79 is: 10,893.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.21 : 19,129.97 = 7,893.79 : x
  2. Step 2: Convert to fraction form
    13,862.21/19,129.97 = 7,893.79/x
  3. Step 3: Cross multiply
    13,862.21x = 19,129.97 × 7,893.79
  4. Step 4: Simplify right side
    13,862.21x = 151,007,937.80
  5. Step 5: Solve for x
    x = 151,007,937.80/13,862.21
  6. Step 6: Final answer
    x = 10,893.50

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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.