Home / 20,678,761.45-31,018,181.06-8,534,904.49

Finding the Fourth Proportional to 20,678,761.45, 31,018,181.06 and 8,534,904.49

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Solution

The fourth proportional to 20,678,761.45, 31,018,181.06 and 8,534,904.49 is: 12,802,372.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678,761.45 : 31,018,181.06 = 8,534,904.49 : x
  2. Step 2: Convert to fraction form
    20,678,761.45/31,018,181.06 = 8,534,904.49/x
  3. Step 3: Cross multiply
    20,678,761.45x = 31,018,181.06 × 8,534,904.49
  4. Step 4: Simplify right side
    20,678,761.45x = 264,737,212,812,719.59
  5. Step 5: Solve for x
    x = 264,737,212,812,719.59/20,678,761.45
  6. Step 6: Final answer
    x = 12,802,372.78

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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.