Home / 20,881,168.89-28,819,476.45-12,179,341.32

Finding the Fourth Proportional to 20,881,168.89, 28,819,476.45 and 12,179,341.32

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Solution

The fourth proportional to 20,881,168.89, 28,819,476.45 and 12,179,341.32 is: 16,809,511.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,168.89 : 28,819,476.45 = 12,179,341.32 : x
  2. Step 2: Convert to fraction form
    20,881,168.89/28,819,476.45 = 12,179,341.32/x
  3. Step 3: Cross multiply
    20,881,168.89x = 28,819,476.45 × 12,179,341.32
  4. Step 4: Simplify right side
    20,881,168.89x = 351,002,240,348,251.94
  5. Step 5: Solve for x
    x = 351,002,240,348,251.94/20,881,168.89
  6. Step 6: Final answer
    x = 16,809,511.11

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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.