Home / 13,863.20-19,129.28-7,894.58

Finding the Fourth Proportional to 13,863.20, 19,129.28 and 7,894.58

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Solution

The fourth proportional to 13,863.20, 19,129.28 and 7,894.58 is: 10,893.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.20 : 19,129.28 = 7,894.58 : x
  2. Step 2: Convert to fraction form
    13,863.20/19,129.28 = 7,894.58/x
  3. Step 3: Cross multiply
    13,863.20x = 19,129.28 × 7,894.58
  4. Step 4: Simplify right side
    13,863.20x = 151,017,631.30
  5. Step 5: Solve for x
    x = 151,017,631.30/13,863.20
  6. Step 6: Final answer
    x = 10,893.42

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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.