Home / 18,872,879-28,273,253.34-15,818,421.92

Finding the Fourth Proportional to 18,872,879, 28,273,253.34 and 15,818,421.92

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Solution

The fourth proportional to 18,872,879, 28,273,253.34 and 15,818,421.92 is: 23,697,404.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872,879 : 28,273,253.34 = 15,818,421.92 : x
  2. Step 2: Convert to fraction form
    18,872,879/28,273,253.34 = 15,818,421.92/x
  3. Step 3: Cross multiply
    18,872,879x = 28,273,253.34 × 15,818,421.92
  4. Step 4: Simplify right side
    18,872,879x = 447,238,250,383,169.19
  5. Step 5: Solve for x
    x = 447,238,250,383,169.19/18,872,879
  6. Step 6: Final answer
    x = 23,697,404.64

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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.