Home / 20,928,497.58-28,881,662.54-11,509,660.85

Finding the Fourth Proportional to 20,928,497.58, 28,881,662.54 and 11,509,660.85

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Solution

The fourth proportional to 20,928,497.58, 28,881,662.54 and 11,509,660.85 is: 15,883,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928,497.58 : 28,881,662.54 = 11,509,660.85 : x
  2. Step 2: Convert to fraction form
    20,928,497.58/28,881,662.54 = 11,509,660.85/x
  3. Step 3: Cross multiply
    20,928,497.58x = 28,881,662.54 × 11,509,660.85
  4. Step 4: Simplify right side
    20,928,497.58x = 332,418,140,417,592.94
  5. Step 5: Solve for x
    x = 332,418,140,417,592.94/20,928,497.58
  6. Step 6: Final answer
    x = 15,883,516.68

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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.