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Finding the Fourth Proportional to 23,405.80, 35,171.10 and 12,884.20

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Solution

The fourth proportional to 23,405.80, 35,171.10 and 12,884.20 is: 19,360.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,405.80 : 35,171.10 = 12,884.20 : x
  2. Step 2: Convert to fraction form
    23,405.80/35,171.10 = 12,884.20/x
  3. Step 3: Cross multiply
    23,405.80x = 35,171.10 × 12,884.20
  4. Step 4: Simplify right side
    23,405.80x = 453,151,486.62
  5. Step 5: Solve for x
    x = 453,151,486.62/23,405.80
  6. Step 6: Final answer
    x = 19,360.65

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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.