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Finding the Fourth Proportional to 12,028.59, 18,013.73 and 8,320.41

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Solution

The fourth proportional to 12,028.59, 18,013.73 and 8,320.41 is: 12,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.59 : 18,013.73 = 8,320.41 : x
  2. Step 2: Convert to fraction form
    12,028.59/18,013.73 = 8,320.41/x
  3. Step 3: Cross multiply
    12,028.59x = 18,013.73 × 8,320.41
  4. Step 4: Simplify right side
    12,028.59x = 149,881,577.63
  5. Step 5: Solve for x
    x = 149,881,577.63/12,028.59
  6. Step 6: Final answer
    x = 12,460.44

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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.