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Finding the Fourth Proportional to 13,953.92, 21,031.22 and 12,029.36

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Solution

The fourth proportional to 13,953.92, 21,031.22 and 12,029.36 is: 18,130.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.92 : 21,031.22 = 12,029.36 : x
  2. Step 2: Convert to fraction form
    13,953.92/21,031.22 = 12,029.36/x
  3. Step 3: Cross multiply
    13,953.92x = 21,031.22 × 12,029.36
  4. Step 4: Simplify right side
    13,953.92x = 252,992,116.62
  5. Step 5: Solve for x
    x = 252,992,116.62/13,953.92
  6. Step 6: Final answer
    x = 18,130.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.