Home / 28,186.60-38,897.54-15,611.44

Finding the Fourth Proportional to 28,186.60, 38,897.54 and 15,611.44

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Solution

The fourth proportional to 28,186.60, 38,897.54 and 15,611.44 is: 21,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.60 : 38,897.54 = 15,611.44 : x
  2. Step 2: Convert to fraction form
    28,186.60/38,897.54 = 15,611.44/x
  3. Step 3: Cross multiply
    28,186.60x = 38,897.54 × 15,611.44
  4. Step 4: Simplify right side
    28,186.60x = 607,246,611.86
  5. Step 5: Solve for x
    x = 607,246,611.86/28,186.60
  6. Step 6: Final answer
    x = 21,543.80

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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.