Home / 19,133.28-28,654.56-12,186.72

Finding the Fourth Proportional to 19,133.28, 28,654.56 and 12,186.72

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Solution

The fourth proportional to 19,133.28, 28,654.56 and 12,186.72 is: 18,251.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,133.28 : 28,654.56 = 12,186.72 : x
  2. Step 2: Convert to fraction form
    19,133.28/28,654.56 = 12,186.72/x
  3. Step 3: Cross multiply
    19,133.28x = 28,654.56 × 12,186.72
  4. Step 4: Simplify right side
    19,133.28x = 349,205,099.44
  5. Step 5: Solve for x
    x = 349,205,099.44/19,133.28
  6. Step 6: Final answer
    x = 18,251.19

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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.