Home / 10,505,720.70-15,743,818.80-8,350,432.20

Finding the Fourth Proportional to 10,505,720.70, 15,743,818.80 and 8,350,432.20

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Solution

The fourth proportional to 10,505,720.70, 15,743,818.80 and 8,350,432.20 is: 12,513,914.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505,720.70 : 15,743,818.80 = 8,350,432.20 : x
  2. Step 2: Convert to fraction form
    10,505,720.70/15,743,818.80 = 8,350,432.20/x
  3. Step 3: Cross multiply
    10,505,720.70x = 15,743,818.80 × 8,350,432.20
  4. Step 4: Simplify right side
    10,505,720.70x = 131,467,691,458,485.38
  5. Step 5: Solve for x
    x = 131,467,691,458,485.38/10,505,720.70
  6. Step 6: Final answer
    x = 12,513,914.58

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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.