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Finding the Fourth Proportional to 13,953.97, 20,930.96 and 13,068.24

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Solution

The fourth proportional to 13,953.97, 20,930.96 and 13,068.24 is: 19,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.97 : 20,930.96 = 13,068.24 : x
  2. Step 2: Convert to fraction form
    13,953.97/20,930.96 = 13,068.24/x
  3. Step 3: Cross multiply
    13,953.97x = 20,930.96 × 13,068.24
  4. Step 4: Simplify right side
    13,953.97x = 273,530,689.38
  5. Step 5: Solve for x
    x = 273,530,689.38/13,953.97
  6. Step 6: Final answer
    x = 19,602.35

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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.