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Finding the Fourth Proportional to 12,160.46, 18,240.68 and 2,926.46

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Solution

The fourth proportional to 12,160.46, 18,240.68 and 2,926.46 is: 4,389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.46 : 18,240.68 = 2,926.46 : x
  2. Step 2: Convert to fraction form
    12,160.46/18,240.68 = 2,926.46/x
  3. Step 3: Cross multiply
    12,160.46x = 18,240.68 × 2,926.46
  4. Step 4: Simplify right side
    12,160.46x = 53,380,536.51
  5. Step 5: Solve for x
    x = 53,380,536.51/12,160.46
  6. Step 6: Final answer
    x = 4,389.68

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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.