Home / 20,928,505.70-28,881,673.62-11,509,668.92

Finding the Fourth Proportional to 20,928,505.70, 28,881,673.62 and 11,509,668.92

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Solution

The fourth proportional to 20,928,505.70, 28,881,673.62 and 11,509,668.92 is: 15,883,527.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928,505.70 : 28,881,673.62 = 11,509,668.92 : x
  2. Step 2: Convert to fraction form
    20,928,505.70/28,881,673.62 = 11,509,668.92/x
  3. Step 3: Cross multiply
    20,928,505.70x = 28,881,673.62 × 11,509,668.92
  4. Step 4: Simplify right side
    20,928,505.70x = 332,418,501,221,697.88
  5. Step 5: Solve for x
    x = 332,418,501,221,697.88/20,928,505.70
  6. Step 6: Final answer
    x = 15,883,527.76

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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.