Home / 28,108.45-38,797.74-18,555.31

Finding the Fourth Proportional to 28,108.45, 38,797.74 and 18,555.31

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Solution

The fourth proportional to 28,108.45, 38,797.74 and 18,555.31 is: 25,611.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.45 : 38,797.74 = 18,555.31 : x
  2. Step 2: Convert to fraction form
    28,108.45/38,797.74 = 18,555.31/x
  3. Step 3: Cross multiply
    28,108.45x = 38,797.74 × 18,555.31
  4. Step 4: Simplify right side
    28,108.45x = 719,904,093.00
  5. Step 5: Solve for x
    x = 719,904,093.00/28,108.45
  6. Step 6: Final answer
    x = 25,611.66

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Double scale
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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.