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Finding the Fourth Proportional to 13,463, 18,587.64 and 8,754.20

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Solution

The fourth proportional to 13,463, 18,587.64 and 8,754.20 is: 12,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463 : 18,587.64 = 8,754.20 : x
  2. Step 2: Convert to fraction form
    13,463/18,587.64 = 8,754.20/x
  3. Step 3: Cross multiply
    13,463x = 18,587.64 × 8,754.20
  4. Step 4: Simplify right side
    13,463x = 162,719,918.09
  5. Step 5: Solve for x
    x = 162,719,918.09/13,463
  6. Step 6: Final answer
    x = 12,086.45

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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.