Home / 20,881,163.42-28,819,468.77-12,179,335.76

Finding the Fourth Proportional to 20,881,163.42, 28,819,468.77 and 12,179,335.76

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Solution

The fourth proportional to 20,881,163.42, 28,819,468.77 and 12,179,335.76 is: 16,809,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,163.42 : 28,819,468.77 = 12,179,335.76 : x
  2. Step 2: Convert to fraction form
    20,881,163.42/28,819,468.77 = 12,179,335.76/x
  3. Step 3: Cross multiply
    20,881,163.42x = 28,819,468.77 × 12,179,335.76
  4. Step 4: Simplify right side
    20,881,163.42x = 351,001,986,574,664.19
  5. Step 5: Solve for x
    x = 351,001,986,574,664.19/20,881,163.42
  6. Step 6: Final answer
    x = 16,809,503.36

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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.