Home / 13,479,905.60-20,219,858.40-7,740,342.80

Finding the Fourth Proportional to 13,479,905.60, 20,219,858.40 and 7,740,342.80

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Solution

The fourth proportional to 13,479,905.60, 20,219,858.40 and 7,740,342.80 is: 11,610,514.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,905.60 : 20,219,858.40 = 7,740,342.80 : x
  2. Step 2: Convert to fraction form
    13,479,905.60/20,219,858.40 = 7,740,342.80/x
  3. Step 3: Cross multiply
    13,479,905.60x = 20,219,858.40 × 7,740,342.80
  4. Step 4: Simplify right side
    13,479,905.60x = 156,508,635,383,459.50
  5. Step 5: Solve for x
    x = 156,508,635,383,459.50/13,479,905.60
  6. Step 6: Final answer
    x = 11,610,514.20

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1.5x scale

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.