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Finding the Fourth Proportional to 13,632.80, 18,805.25 and 8,588.12

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Solution

The fourth proportional to 13,632.80, 18,805.25 and 8,588.12 is: 11,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.80 : 18,805.25 = 8,588.12 : x
  2. Step 2: Convert to fraction form
    13,632.80/18,805.25 = 8,588.12/x
  3. Step 3: Cross multiply
    13,632.80x = 18,805.25 × 8,588.12
  4. Step 4: Simplify right side
    13,632.80x = 161,501,700.69
  5. Step 5: Solve for x
    x = 161,501,700.69/13,632.80
  6. Step 6: Final answer
    x = 11,846.55

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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.