Home / 10,256,857.20-15,364,290.60-5,211,010.80

Finding the Fourth Proportional to 10,256,857.20, 15,364,290.60 and 5,211,010.80

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Solution

The fourth proportional to 10,256,857.20, 15,364,290.60 and 5,211,010.80 is: 7,805,849.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,256,857.20 : 15,364,290.60 = 5,211,010.80 : x
  2. Step 2: Convert to fraction form
    10,256,857.20/15,364,290.60 = 5,211,010.80/x
  3. Step 3: Cross multiply
    10,256,857.20x = 15,364,290.60 × 5,211,010.80
  4. Step 4: Simplify right side
    10,256,857.20x = 80,063,484,250,938.47
  5. Step 5: Solve for x
    x = 80,063,484,250,938.47/10,256,857.20
  6. Step 6: Final answer
    x = 7,805,849.56

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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.