Home / 18,790,012.72-28,178,105.72-6,490,847.20

Finding the Fourth Proportional to 18,790,012.72, 28,178,105.72 and 6,490,847.20

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Solution

The fourth proportional to 18,790,012.72, 28,178,105.72 and 6,490,847.20 is: 9,733,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790,012.72 : 28,178,105.72 = 6,490,847.20 : x
  2. Step 2: Convert to fraction form
    18,790,012.72/28,178,105.72 = 6,490,847.20/x
  3. Step 3: Cross multiply
    18,790,012.72x = 28,178,105.72 × 6,490,847.20
  4. Step 4: Simplify right side
    18,790,012.72x = 182,899,778,613,965.97
  5. Step 5: Solve for x
    x = 182,899,778,613,965.97/18,790,012.72
  6. Step 6: Final answer
    x = 9,733,882.64

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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.