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Finding the Fourth Proportional to 13,652, 18,839.76 and 8,066.40

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Solution

The fourth proportional to 13,652, 18,839.76 and 8,066.40 is: 11,131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652 : 18,839.76 = 8,066.40 : x
  2. Step 2: Convert to fraction form
    13,652/18,839.76 = 8,066.40/x
  3. Step 3: Cross multiply
    13,652x = 18,839.76 × 8,066.40
  4. Step 4: Simplify right side
    13,652x = 151,969,040.06
  5. Step 5: Solve for x
    x = 151,969,040.06/13,652
  6. Step 6: Final answer
    x = 11,131.63

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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.