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Finding the Fourth Proportional to 20,005.55, 30,009.84 and 5,964.50

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Solution

The fourth proportional to 20,005.55, 30,009.84 and 5,964.50 is: 8,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.55 : 30,009.84 = 5,964.50 : x
  2. Step 2: Convert to fraction form
    20,005.55/30,009.84 = 5,964.50/x
  3. Step 3: Cross multiply
    20,005.55x = 30,009.84 × 5,964.50
  4. Step 4: Simplify right side
    20,005.55x = 178,993,540.63
  5. Step 5: Solve for x
    x = 178,993,540.63/20,005.55
  6. Step 6: Final answer
    x = 8,947.20

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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.