Home / 28,186.70-38,897.62-15,611.44

Finding the Fourth Proportional to 28,186.70, 38,897.62 and 15,611.44

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Solution

The fourth proportional to 28,186.70, 38,897.62 and 15,611.44 is: 21,543.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.70 : 38,897.62 = 15,611.44 : x
  2. Step 2: Convert to fraction form
    28,186.70/38,897.62 = 15,611.44/x
  3. Step 3: Cross multiply
    28,186.70x = 38,897.62 × 15,611.44
  4. Step 4: Simplify right side
    28,186.70x = 607,247,860.77
  5. Step 5: Solve for x
    x = 607,247,860.77/28,186.70
  6. Step 6: Final answer
    x = 21,543.77

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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.