Home / 20,913,836.64-28,860,518.64-11,621,166.72

Finding the Fourth Proportional to 20,913,836.64, 28,860,518.64 and 11,621,166.72

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Solution

The fourth proportional to 20,913,836.64, 28,860,518.64 and 11,621,166.72 is: 16,036,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913,836.64 : 28,860,518.64 = 11,621,166.72 : x
  2. Step 2: Convert to fraction form
    20,913,836.64/28,860,518.64 = 11,621,166.72/x
  3. Step 3: Cross multiply
    20,913,836.64x = 28,860,518.64 × 11,621,166.72
  4. Step 4: Simplify right side
    20,913,836.64x = 335,392,898,741,107.69
  5. Step 5: Solve for x
    x = 335,392,898,741,107.69/20,913,836.64
  6. Step 6: Final answer
    x = 16,036,890.05

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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.