Home / 20,544.12-30,816.18-11,772.90

Finding the Fourth Proportional to 20,544.12, 30,816.18 and 11,772.90

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Solution

The fourth proportional to 20,544.12, 30,816.18 and 11,772.90 is: 17,659.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.12 : 30,816.18 = 11,772.90 : x
  2. Step 2: Convert to fraction form
    20,544.12/30,816.18 = 11,772.90/x
  3. Step 3: Cross multiply
    20,544.12x = 30,816.18 × 11,772.90
  4. Step 4: Simplify right side
    20,544.12x = 362,795,805.52
  5. Step 5: Solve for x
    x = 362,795,805.52/20,544.12
  6. Step 6: Final answer
    x = 17,659.35

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Double scale
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Similar ratio
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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.