Home / 13,723.53-18,937.38-7,755.72

Finding the Fourth Proportional to 13,723.53, 18,937.38 and 7,755.72

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Solution

The fourth proportional to 13,723.53, 18,937.38 and 7,755.72 is: 10,702.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.53 : 18,937.38 = 7,755.72 : x
  2. Step 2: Convert to fraction form
    13,723.53/18,937.38 = 7,755.72/x
  3. Step 3: Cross multiply
    13,723.53x = 18,937.38 × 7,755.72
  4. Step 4: Simplify right side
    13,723.53x = 146,873,016.81
  5. Step 5: Solve for x
    x = 146,873,016.81/13,723.53
  6. Step 6: Final answer
    x = 10,702.28

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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.