Home / 20,421,269.97-28,181,357.31-11,128,842.64

Finding the Fourth Proportional to 20,421,269.97, 28,181,357.31 and 11,128,842.64

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Solution

The fourth proportional to 20,421,269.97, 28,181,357.31 and 11,128,842.64 is: 15,357,805.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,269.97 : 28,181,357.31 = 11,128,842.64 : x
  2. Step 2: Convert to fraction form
    20,421,269.97/28,181,357.31 = 11,128,842.64/x
  3. Step 3: Cross multiply
    20,421,269.97x = 28,181,357.31 × 11,128,842.64
  4. Step 4: Simplify right side
    20,421,269.97x = 313,625,890,884,603.69
  5. Step 5: Solve for x
    x = 313,625,890,884,603.69/20,421,269.97
  6. Step 6: Final answer
    x = 15,357,805.43

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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.