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Finding the Fourth Proportional to 13,672.65, 18,869.60 and 8,007.05

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Solution

The fourth proportional to 13,672.65, 18,869.60 and 8,007.05 is: 11,050.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.65 : 18,869.60 = 8,007.05 : x
  2. Step 2: Convert to fraction form
    13,672.65/18,869.60 = 8,007.05/x
  3. Step 3: Cross multiply
    13,672.65x = 18,869.60 × 8,007.05
  4. Step 4: Simplify right side
    13,672.65x = 151,089,696.30
  5. Step 5: Solve for x
    x = 151,089,696.30/13,672.65
  6. Step 6: Final answer
    x = 11,050.51

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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.