Home / 20,693,606.90-28,555,811.22-12,428,758.22

Finding the Fourth Proportional to 20,693,606.90, 28,555,811.22 and 12,428,758.22

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Solution

The fourth proportional to 20,693,606.90, 28,555,811.22 and 12,428,758.22 is: 17,150,865.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693,606.90 : 28,555,811.22 = 12,428,758.22 : x
  2. Step 2: Convert to fraction form
    20,693,606.90/28,555,811.22 = 12,428,758.22/x
  3. Step 3: Cross multiply
    20,693,606.90x = 28,555,811.22 × 12,428,758.22
  4. Step 4: Simplify right side
    20,693,606.90x = 354,913,273,429,343.25
  5. Step 5: Solve for x
    x = 354,913,273,429,343.25/20,693,606.90
  6. Step 6: Final answer
    x = 17,150,865.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.