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Finding the Fourth Proportional to 18,552,798.90, 27,829,198.35 and 7,782,261.30

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Solution

The fourth proportional to 18,552,798.90, 27,829,198.35 and 7,782,261.30 is: 11,673,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,552,798.90 : 27,829,198.35 = 7,782,261.30 : x
  2. Step 2: Convert to fraction form
    18,552,798.90/27,829,198.35 = 7,782,261.30/x
  3. Step 3: Cross multiply
    18,552,798.90x = 27,829,198.35 × 7,782,261.30
  4. Step 4: Simplify right side
    18,552,798.90x = 216,574,093,329,228.88
  5. Step 5: Solve for x
    x = 216,574,093,329,228.88/18,552,798.90
  6. Step 6: Final answer
    x = 11,673,391.95

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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.