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Finding the Fourth Proportional to 28,672.68, 43,019.04 and 11,154.78

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Solution

The fourth proportional to 28,672.68, 43,019.04 and 11,154.78 is: 16,736.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,672.68 : 43,019.04 = 11,154.78 : x
  2. Step 2: Convert to fraction form
    28,672.68/43,019.04 = 11,154.78/x
  3. Step 3: Cross multiply
    28,672.68x = 43,019.04 × 11,154.78
  4. Step 4: Simplify right side
    28,672.68x = 479,867,927.01
  5. Step 5: Solve for x
    x = 479,867,927.01/28,672.68
  6. Step 6: Final answer
    x = 16,736.07

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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.