Home / 20,879,932.10-28,814,961.55-12,059,219.51

Finding the Fourth Proportional to 20,879,932.10, 28,814,961.55 and 12,059,219.51

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Solution

The fourth proportional to 20,879,932.10, 28,814,961.55 and 12,059,219.51 is: 16,642,101.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,879,932.10 : 28,814,961.55 = 12,059,219.51 : x
  2. Step 2: Convert to fraction form
    20,879,932.10/28,814,961.55 = 12,059,219.51/x
  3. Step 3: Cross multiply
    20,879,932.10x = 28,814,961.55 × 12,059,219.51
  4. Step 4: Simplify right side
    20,879,932.10x = 347,485,946,541,160.62
  5. Step 5: Solve for x
    x = 347,485,946,541,160.62/20,879,932.10
  6. Step 6: Final answer
    x = 16,642,101.37

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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.