Home / 20,115.52-30,176.03-11,685.99

Finding the Fourth Proportional to 20,115.52, 30,176.03 and 11,685.99

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Solution

The fourth proportional to 20,115.52, 30,176.03 and 11,685.99 is: 17,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.52 : 30,176.03 = 11,685.99 : x
  2. Step 2: Convert to fraction form
    20,115.52/30,176.03 = 11,685.99/x
  3. Step 3: Cross multiply
    20,115.52x = 30,176.03 × 11,685.99
  4. Step 4: Simplify right side
    20,115.52x = 352,636,784.82
  5. Step 5: Solve for x
    x = 352,636,784.82/20,115.52
  6. Step 6: Final answer
    x = 17,530.58

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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.