Home / 12,072.96-16,665.60-10,387.60

Finding the Fourth Proportional to 12,072.96, 16,665.60 and 10,387.60

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Solution

The fourth proportional to 12,072.96, 16,665.60 and 10,387.60 is: 14,339.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.96 : 16,665.60 = 10,387.60 : x
  2. Step 2: Convert to fraction form
    12,072.96/16,665.60 = 10,387.60/x
  3. Step 3: Cross multiply
    12,072.96x = 16,665.60 × 10,387.60
  4. Step 4: Simplify right side
    12,072.96x = 173,115,586.56
  5. Step 5: Solve for x
    x = 173,115,586.56/12,072.96
  6. Step 6: Final answer
    x = 14,339.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.