Home / 10,161.72-14,029.20-6,388.08

Finding the Fourth Proportional to 10,161.72, 14,029.20 and 6,388.08

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Solution

The fourth proportional to 10,161.72, 14,029.20 and 6,388.08 is: 8,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,161.72 : 14,029.20 = 6,388.08 : x
  2. Step 2: Convert to fraction form
    10,161.72/14,029.20 = 6,388.08/x
  3. Step 3: Cross multiply
    10,161.72x = 14,029.20 × 6,388.08
  4. Step 4: Simplify right side
    10,161.72x = 89,619,651.94
  5. Step 5: Solve for x
    x = 89,619,651.94/10,161.72
  6. Step 6: Final answer
    x = 8,819.34

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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.