Home / 20,111.76-30,157.91-11,794.47

Finding the Fourth Proportional to 20,111.76, 30,157.91 and 11,794.47

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Solution

The fourth proportional to 20,111.76, 30,157.91 and 11,794.47 is: 17,686.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.76 : 30,157.91 = 11,794.47 : x
  2. Step 2: Convert to fraction form
    20,111.76/30,157.91 = 11,794.47/x
  3. Step 3: Cross multiply
    20,111.76x = 30,157.91 × 11,794.47
  4. Step 4: Simplify right side
    20,111.76x = 355,696,729.45
  5. Step 5: Solve for x
    x = 355,696,729.45/20,111.76
  6. Step 6: Final answer
    x = 17,686.01

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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.