Home / 20,497,958.90-28,287,240.29-11,205,641.25

Finding the Fourth Proportional to 20,497,958.90, 28,287,240.29 and 11,205,641.25

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Solution

The fourth proportional to 20,497,958.90, 28,287,240.29 and 11,205,641.25 is: 15,463,816.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497,958.90 : 28,287,240.29 = 11,205,641.25 : x
  2. Step 2: Convert to fraction form
    20,497,958.90/28,287,240.29 = 11,205,641.25/x
  3. Step 3: Cross multiply
    20,497,958.90x = 28,287,240.29 × 11,205,641.25
  4. Step 4: Simplify right side
    20,497,958.90x = 316,976,666,628,278.94
  5. Step 5: Solve for x
    x = 316,976,666,628,278.94/20,497,958.90
  6. Step 6: Final answer
    x = 15,463,816.09

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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.