Home / 18,678,835.80-28,018,253.70-17,961,390.45

Finding the Fourth Proportional to 18,678,835.80, 28,018,253.70 and 17,961,390.45

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Solution

The fourth proportional to 18,678,835.80, 28,018,253.70 and 17,961,390.45 is: 26,942,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,835.80 : 28,018,253.70 = 17,961,390.45 : x
  2. Step 2: Convert to fraction form
    18,678,835.80/28,018,253.70 = 17,961,390.45/x
  3. Step 3: Cross multiply
    18,678,835.80x = 28,018,253.70 × 17,961,390.45
  4. Step 4: Simplify right side
    18,678,835.80x = 503,246,794,432,857.12
  5. Step 5: Solve for x
    x = 503,246,794,432,857.12/18,678,835.80
  6. Step 6: Final answer
    x = 26,942,085.68

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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.