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Finding the Fourth Proportional to 13,706,811.15, 20,560,216.73 and 13,308,230.40

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Solution

The fourth proportional to 13,706,811.15, 20,560,216.73 and 13,308,230.40 is: 19,962,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,706,811.15 : 20,560,216.73 = 13,308,230.40 : x
  2. Step 2: Convert to fraction form
    13,706,811.15/20,560,216.73 = 13,308,230.40/x
  3. Step 3: Cross multiply
    13,706,811.15x = 20,560,216.73 × 13,308,230.40
  4. Step 4: Simplify right side
    13,706,811.15x = 273,620,101,250,233.47
  5. Step 5: Solve for x
    x = 273,620,101,250,233.47/13,706,811.15
  6. Step 6: Final answer
    x = 19,962,345.60

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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.