Home / 13,747.73-18,971.55-8,081.37

Finding the Fourth Proportional to 13,747.73, 18,971.55 and 8,081.37

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Solution

The fourth proportional to 13,747.73, 18,971.55 and 8,081.37 is: 11,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.73 : 18,971.55 = 8,081.37 : x
  2. Step 2: Convert to fraction form
    13,747.73/18,971.55 = 8,081.37/x
  3. Step 3: Cross multiply
    13,747.73x = 18,971.55 × 8,081.37
  4. Step 4: Simplify right side
    13,747.73x = 153,316,115.02
  5. Step 5: Solve for x
    x = 153,316,115.02/13,747.73
  6. Step 6: Final answer
    x = 11,152.11

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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.