Home / 30,540.10-45,784.17-13,894.30

Finding the Fourth Proportional to 30,540.10, 45,784.17 and 13,894.30

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Solution

The fourth proportional to 30,540.10, 45,784.17 and 13,894.30 is: 20,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,540.10 : 45,784.17 = 13,894.30 : x
  2. Step 2: Convert to fraction form
    30,540.10/45,784.17 = 13,894.30/x
  3. Step 3: Cross multiply
    30,540.10x = 45,784.17 × 13,894.30
  4. Step 4: Simplify right side
    30,540.10x = 636,138,993.23
  5. Step 5: Solve for x
    x = 636,138,993.23/30,540.10
  6. Step 6: Final answer
    x = 20,829.63

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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.