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Finding the Fourth Proportional to 35,415.54, 53,129.88 and 11,723.30

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Solution

The fourth proportional to 35,415.54, 53,129.88 and 11,723.30 is: 17,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,415.54 : 53,129.88 = 11,723.30 : x
  2. Step 2: Convert to fraction form
    35,415.54/53,129.88 = 11,723.30/x
  3. Step 3: Cross multiply
    35,415.54x = 53,129.88 × 11,723.30
  4. Step 4: Simplify right side
    35,415.54x = 622,857,522.20
  5. Step 5: Solve for x
    x = 622,857,522.20/35,415.54
  6. Step 6: Final answer
    x = 17,587.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.