Home / 20,565,609.60-30,848,414.40-7,786,531.20

Finding the Fourth Proportional to 20,565,609.60, 30,848,414.40 and 7,786,531.20

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Solution

The fourth proportional to 20,565,609.60, 30,848,414.40 and 7,786,531.20 is: 11,679,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565,609.60 : 30,848,414.40 = 7,786,531.20 : x
  2. Step 2: Convert to fraction form
    20,565,609.60/30,848,414.40 = 7,786,531.20/x
  3. Step 3: Cross multiply
    20,565,609.60x = 30,848,414.40 × 7,786,531.20
  4. Step 4: Simplify right side
    20,565,609.60x = 240,202,141,196,129.28
  5. Step 5: Solve for x
    x = 240,202,141,196,129.28/20,565,609.60
  6. Step 6: Final answer
    x = 11,679,796.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.