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Finding the Fourth Proportional to 13,072.65, 18,043.11 and 8,041.20

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Solution

The fourth proportional to 13,072.65, 18,043.11 and 8,041.20 is: 11,098.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.65 : 18,043.11 = 8,041.20 : x
  2. Step 2: Convert to fraction form
    13,072.65/18,043.11 = 8,041.20/x
  3. Step 3: Cross multiply
    13,072.65x = 18,043.11 × 8,041.20
  4. Step 4: Simplify right side
    13,072.65x = 145,088,256.13
  5. Step 5: Solve for x
    x = 145,088,256.13/13,072.65
  6. Step 6: Final answer
    x = 11,098.61

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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.