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Finding the Fourth Proportional to 13,122, 18,108.36 and 7,534.08

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Solution

The fourth proportional to 13,122, 18,108.36 and 7,534.08 is: 10,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122 : 18,108.36 = 7,534.08 : x
  2. Step 2: Convert to fraction form
    13,122/18,108.36 = 7,534.08/x
  3. Step 3: Cross multiply
    13,122x = 18,108.36 × 7,534.08
  4. Step 4: Simplify right side
    13,122x = 136,429,832.91
  5. Step 5: Solve for x
    x = 136,429,832.91/13,122
  6. Step 6: Final answer
    x = 10,397.03

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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.