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Finding the Fourth Proportional to 13,305, 18,354.58 and 8,772.42

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Solution

The fourth proportional to 13,305, 18,354.58 and 8,772.42 is: 12,101.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305 : 18,354.58 = 8,772.42 : x
  2. Step 2: Convert to fraction form
    13,305/18,354.58 = 8,772.42/x
  3. Step 3: Cross multiply
    13,305x = 18,354.58 × 8,772.42
  4. Step 4: Simplify right side
    13,305x = 161,014,084.68
  5. Step 5: Solve for x
    x = 161,014,084.68/13,305
  6. Step 6: Final answer
    x = 12,101.77

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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.