Home / 19,091.20-28,658.40-11,304.40

Finding the Fourth Proportional to 19,091.20, 28,658.40 and 11,304.40

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Solution

The fourth proportional to 19,091.20, 28,658.40 and 11,304.40 is: 16,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,091.20 : 28,658.40 = 11,304.40 : x
  2. Step 2: Convert to fraction form
    19,091.20/28,658.40 = 11,304.40/x
  3. Step 3: Cross multiply
    19,091.20x = 28,658.40 × 11,304.40
  4. Step 4: Simplify right side
    19,091.20x = 323,966,016.96
  5. Step 5: Solve for x
    x = 323,966,016.96/19,091.20
  6. Step 6: Final answer
    x = 16,969.39

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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.