Home / 20,421,296.07-28,180,672.77-11,128,676.52

Finding the Fourth Proportional to 20,421,296.07, 28,180,672.77 and 11,128,676.52

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Solution

The fourth proportional to 20,421,296.07, 28,180,672.77 and 11,128,676.52 is: 15,357,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,296.07 : 28,180,672.77 = 11,128,676.52 : x
  2. Step 2: Convert to fraction form
    20,421,296.07/28,180,672.77 = 11,128,676.52/x
  3. Step 3: Cross multiply
    20,421,296.07x = 28,180,672.77 × 11,128,676.52
  4. Step 4: Simplify right side
    20,421,296.07x = 313,613,591,373,302.31
  5. Step 5: Solve for x
    x = 313,613,591,373,302.31/20,421,296.07
  6. Step 6: Final answer
    x = 15,357,183.52

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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.