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Finding the Fourth Proportional to 13,610.56, 18,784.56 and 8,306.08

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Solution

The fourth proportional to 13,610.56, 18,784.56 and 8,306.08 is: 11,463.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.56 : 18,784.56 = 8,306.08 : x
  2. Step 2: Convert to fraction form
    13,610.56/18,784.56 = 8,306.08/x
  3. Step 3: Cross multiply
    13,610.56x = 18,784.56 × 8,306.08
  4. Step 4: Simplify right side
    13,610.56x = 156,026,058.12
  5. Step 5: Solve for x
    x = 156,026,058.12/13,610.56
  6. Step 6: Final answer
    x = 11,463.60

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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.