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Finding the Fourth Proportional to 12,375.63, 18,564.30 and 4,980.15

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Solution

The fourth proportional to 12,375.63, 18,564.30 and 4,980.15 is: 7,470.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.63 : 18,564.30 = 4,980.15 : x
  2. Step 2: Convert to fraction form
    12,375.63/18,564.30 = 4,980.15/x
  3. Step 3: Cross multiply
    12,375.63x = 18,564.30 × 4,980.15
  4. Step 4: Simplify right side
    12,375.63x = 92,452,998.65
  5. Step 5: Solve for x
    x = 92,452,998.65/12,375.63
  6. Step 6: Final answer
    x = 7,470.57

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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.