Home / 13,723.75-18,943.10-8,755.75

Finding the Fourth Proportional to 13,723.75, 18,943.10 and 8,755.75

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Solution

The fourth proportional to 13,723.75, 18,943.10 and 8,755.75 is: 12,085.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.75 : 18,943.10 = 8,755.75 : x
  2. Step 2: Convert to fraction form
    13,723.75/18,943.10 = 8,755.75/x
  3. Step 3: Cross multiply
    13,723.75x = 18,943.10 × 8,755.75
  4. Step 4: Simplify right side
    13,723.75x = 165,861,047.83
  5. Step 5: Solve for x
    x = 165,861,047.83/13,723.75
  6. Step 6: Final answer
    x = 12,085.69

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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.