Home / 21,102,355.51-31,636,997.21-8,332,418.77

Finding the Fourth Proportional to 21,102,355.51, 31,636,997.21 and 8,332,418.77

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Solution

The fourth proportional to 21,102,355.51, 31,636,997.21 and 8,332,418.77 is: 12,492,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102,355.51 : 31,636,997.21 = 8,332,418.77 : x
  2. Step 2: Convert to fraction form
    21,102,355.51/31,636,997.21 = 8,332,418.77/x
  3. Step 3: Cross multiply
    21,102,355.51x = 31,636,997.21 × 8,332,418.77
  4. Step 4: Simplify right side
    21,102,355.51x = 263,612,709,320,780.19
  5. Step 5: Solve for x
    x = 263,612,709,320,780.19/21,102,355.51
  6. Step 6: Final answer
    x = 12,492,098.77

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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.