Home / 18,653,786.34-27,985,870.58-8,138,379.72

Finding the Fourth Proportional to 18,653,786.34, 27,985,870.58 and 8,138,379.72

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Solution

The fourth proportional to 18,653,786.34, 27,985,870.58 and 8,138,379.72 is: 12,209,834.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,653,786.34 : 27,985,870.58 = 8,138,379.72 : x
  2. Step 2: Convert to fraction form
    18,653,786.34/27,985,870.58 = 8,138,379.72/x
  3. Step 3: Cross multiply
    18,653,786.34x = 27,985,870.58 × 8,138,379.72
  4. Step 4: Simplify right side
    18,653,786.34x = 227,759,641,534,124.72
  5. Step 5: Solve for x
    x = 227,759,641,534,124.72/18,653,786.34
  6. Step 6: Final answer
    x = 12,209,834.37

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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.