Home / 20,478,972.40-28,261,078.26-11,186,671.36

Finding the Fourth Proportional to 20,478,972.40, 28,261,078.26 and 11,186,671.36

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Solution

The fourth proportional to 20,478,972.40, 28,261,078.26 and 11,186,671.36 is: 15,437,659.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,972.40 : 28,261,078.26 = 11,186,671.36 : x
  2. Step 2: Convert to fraction form
    20,478,972.40/28,261,078.26 = 11,186,671.36/x
  3. Step 3: Cross multiply
    20,478,972.40x = 28,261,078.26 × 11,186,671.36
  4. Step 4: Simplify right side
    20,478,972.40x = 316,147,394,773,860.62
  5. Step 5: Solve for x
    x = 316,147,394,773,860.62/20,478,972.40
  6. Step 6: Final answer
    x = 15,437,659.11

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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.