Home / 8,505,421.28-12,758,177.84-2,115,673.64

Finding the Fourth Proportional to 8,505,421.28, 12,758,177.84 and 2,115,673.64

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Solution

The fourth proportional to 8,505,421.28, 12,758,177.84 and 2,115,673.64 is: 3,173,521.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505,421.28 : 12,758,177.84 = 2,115,673.64 : x
  2. Step 2: Convert to fraction form
    8,505,421.28/12,758,177.84 = 2,115,673.64/x
  3. Step 3: Cross multiply
    8,505,421.28x = 12,758,177.84 × 2,115,673.64
  4. Step 4: Simplify right side
    8,505,421.28x = 26,992,140,550,520.14
  5. Step 5: Solve for x
    x = 26,992,140,550,520.14/8,505,421.28
  6. Step 6: Final answer
    x = 3,173,521.88

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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.