Home / 13,666.22-18,819.68-11,872.88

Finding the Fourth Proportional to 13,666.22, 18,819.68 and 11,872.88

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Solution

The fourth proportional to 13,666.22, 18,819.68 and 11,872.88 is: 16,350.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.22 : 18,819.68 = 11,872.88 : x
  2. Step 2: Convert to fraction form
    13,666.22/18,819.68 = 11,872.88/x
  3. Step 3: Cross multiply
    13,666.22x = 18,819.68 × 11,872.88
  4. Step 4: Simplify right side
    13,666.22x = 223,443,802.28
  5. Step 5: Solve for x
    x = 223,443,802.28/13,666.22
  6. Step 6: Final answer
    x = 16,350.08

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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.