Home / 13,755.32-19,079.46-13,390.73

Finding the Fourth Proportional to 13,755.32, 19,079.46 and 13,390.73

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Solution

The fourth proportional to 13,755.32, 19,079.46 and 13,390.73 is: 18,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.32 : 19,079.46 = 13,390.73 : x
  2. Step 2: Convert to fraction form
    13,755.32/19,079.46 = 13,390.73/x
  3. Step 3: Cross multiply
    13,755.32x = 19,079.46 × 13,390.73
  4. Step 4: Simplify right side
    13,755.32x = 255,487,943.85
  5. Step 5: Solve for x
    x = 255,487,943.85/13,755.32
  6. Step 6: Final answer
    x = 18,573.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.