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Finding the Fourth Proportional to 13,610.10, 18,783.99 and 8,307.99

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Solution

The fourth proportional to 13,610.10, 18,783.99 and 8,307.99 is: 11,466.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.10 : 18,783.99 = 8,307.99 : x
  2. Step 2: Convert to fraction form
    13,610.10/18,783.99 = 8,307.99/x
  3. Step 3: Cross multiply
    13,610.10x = 18,783.99 × 8,307.99
  4. Step 4: Simplify right side
    13,610.10x = 156,057,201.08
  5. Step 5: Solve for x
    x = 156,057,201.08/13,610.10
  6. Step 6: Final answer
    x = 11,466.28

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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.