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Finding the Fourth Proportional to 15,809.20, 23,682.60 and 8,023.60

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Solution

The fourth proportional to 15,809.20, 23,682.60 and 8,023.60 is: 12,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,809.20 : 23,682.60 = 8,023.60 : x
  2. Step 2: Convert to fraction form
    15,809.20/23,682.60 = 8,023.60/x
  3. Step 3: Cross multiply
    15,809.20x = 23,682.60 × 8,023.60
  4. Step 4: Simplify right side
    15,809.20x = 190,019,709.36
  5. Step 5: Solve for x
    x = 190,019,709.36/15,809.20
  6. Step 6: Final answer
    x = 12,019.57

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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.