Home / 20,986,424.58-28,960,877.91-11,438,789.19

Finding the Fourth Proportional to 20,986,424.58, 28,960,877.91 and 11,438,789.19

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Solution

The fourth proportional to 20,986,424.58, 28,960,877.91 and 11,438,789.19 is: 15,785,317.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,424.58 : 28,960,877.91 = 11,438,789.19 : x
  2. Step 2: Convert to fraction form
    20,986,424.58/28,960,877.91 = 11,438,789.19/x
  3. Step 3: Cross multiply
    20,986,424.58x = 28,960,877.91 × 11,438,789.19
  4. Step 4: Simplify right side
    20,986,424.58x = 331,277,377,169,817.75
  5. Step 5: Solve for x
    x = 331,277,377,169,817.75/20,986,424.58
  6. Step 6: Final answer
    x = 15,785,317.59

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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.