Home / 13,654.15-18,781.71-11,661.35

Finding the Fourth Proportional to 13,654.15, 18,781.71 and 11,661.35

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Solution

The fourth proportional to 13,654.15, 18,781.71 and 11,661.35 is: 16,040.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.15 : 18,781.71 = 11,661.35 : x
  2. Step 2: Convert to fraction form
    13,654.15/18,781.71 = 11,661.35/x
  3. Step 3: Cross multiply
    13,654.15x = 18,781.71 × 11,661.35
  4. Step 4: Simplify right side
    13,654.15x = 219,019,956.27
  5. Step 5: Solve for x
    x = 219,019,956.27/13,654.15
  6. Step 6: Final answer
    x = 16,040.54

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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.