Home / 13,971,239.40-20,956,859.10-13,309,890.60

Finding the Fourth Proportional to 13,971,239.40, 20,956,859.10 and 13,309,890.60

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Solution

The fourth proportional to 13,971,239.40, 20,956,859.10 and 13,309,890.60 is: 19,964,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971,239.40 : 20,956,859.10 = 13,309,890.60 : x
  2. Step 2: Convert to fraction form
    13,971,239.40/20,956,859.10 = 13,309,890.60/x
  3. Step 3: Cross multiply
    13,971,239.40x = 20,956,859.10 × 13,309,890.60
  4. Step 4: Simplify right side
    13,971,239.40x = 278,933,501,940,614.47
  5. Step 5: Solve for x
    x = 278,933,501,940,614.47/13,971,239.40
  6. Step 6: Final answer
    x = 19,964,835.90

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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.