Home / 13,747.29-18,971.68-8,081.00

Finding the Fourth Proportional to 13,747.29, 18,971.68 and 8,081.00

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Solution

The fourth proportional to 13,747.29, 18,971.68 and 8,081.00 is: 11,152.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.29 : 18,971.68 = 8,081.00 : x
  2. Step 2: Convert to fraction form
    13,747.29/18,971.68 = 8,081.00/x
  3. Step 3: Cross multiply
    13,747.29x = 18,971.68 × 8,081.00
  4. Step 4: Simplify right side
    13,747.29x = 153,310,020.92
  5. Step 5: Solve for x
    x = 153,310,020.92/13,747.29
  6. Step 6: Final answer
    x = 11,152.02

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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.