Home / 20,881,153.89-28,819,455.68-12,179,326.25

Finding the Fourth Proportional to 20,881,153.89, 28,819,455.68 and 12,179,326.25

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Solution

The fourth proportional to 20,881,153.89, 28,819,455.68 and 12,179,326.25 is: 16,809,490.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,153.89 : 28,819,455.68 = 12,179,326.25 : x
  2. Step 2: Convert to fraction form
    20,881,153.89/28,819,455.68 = 12,179,326.25/x
  3. Step 3: Cross multiply
    20,881,153.89x = 28,819,455.68 × 12,179,326.25
  4. Step 4: Simplify right side
    20,881,153.89x = 351,001,553,176,632.56
  5. Step 5: Solve for x
    x = 351,001,553,176,632.56/20,881,153.89
  6. Step 6: Final answer
    x = 16,809,490.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.