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Finding the Fourth Proportional to 12,483.64, 18,709.89 and 8,029.45

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Solution

The fourth proportional to 12,483.64, 18,709.89 and 8,029.45 is: 12,034.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.64 : 18,709.89 = 8,029.45 : x
  2. Step 2: Convert to fraction form
    12,483.64/18,709.89 = 8,029.45/x
  3. Step 3: Cross multiply
    12,483.64x = 18,709.89 × 8,029.45
  4. Step 4: Simplify right side
    12,483.64x = 150,230,126.26
  5. Step 5: Solve for x
    x = 150,230,126.26/12,483.64
  6. Step 6: Final answer
    x = 12,034.16

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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.