Home / 18,684,684.60-28,027,026.90-15,661,375.80

Finding the Fourth Proportional to 18,684,684.60, 28,027,026.90 and 15,661,375.80

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Solution

The fourth proportional to 18,684,684.60, 28,027,026.90 and 15,661,375.80 is: 23,492,063.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,684.60 : 28,027,026.90 = 15,661,375.80 : x
  2. Step 2: Convert to fraction form
    18,684,684.60/28,027,026.90 = 15,661,375.80/x
  3. Step 3: Cross multiply
    18,684,684.60x = 28,027,026.90 × 15,661,375.80
  4. Step 4: Simplify right side
    18,684,684.60x = 438,941,800,837,609
  5. Step 5: Solve for x
    x = 438,941,800,837,609/18,684,684.60
  6. Step 6: Final answer
    x = 23,492,063.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.