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Finding the Fourth Proportional to 13,296.16, 18,351.44 and 8,820.16

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Solution

The fourth proportional to 13,296.16, 18,351.44 and 8,820.16 is: 12,173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.16 : 18,351.44 = 8,820.16 : x
  2. Step 2: Convert to fraction form
    13,296.16/18,351.44 = 8,820.16/x
  3. Step 3: Cross multiply
    13,296.16x = 18,351.44 × 8,820.16
  4. Step 4: Simplify right side
    13,296.16x = 161,862,637.03
  5. Step 5: Solve for x
    x = 161,862,637.03/13,296.16
  6. Step 6: Final answer
    x = 12,173.64

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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.