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Finding the Fourth Proportional to 13,609,103.60, 20,413,655.40 and 12,014,780.60

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Solution

The fourth proportional to 13,609,103.60, 20,413,655.40 and 12,014,780.60 is: 18,022,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,609,103.60 : 20,413,655.40 = 12,014,780.60 : x
  2. Step 2: Convert to fraction form
    13,609,103.60/20,413,655.40 = 12,014,780.60/x
  3. Step 3: Cross multiply
    13,609,103.60x = 20,413,655.40 × 12,014,780.60
  4. Step 4: Simplify right side
    13,609,103.60x = 245,265,590,875,005.22
  5. Step 5: Solve for x
    x = 245,265,590,875,005.22/13,609,103.60
  6. Step 6: Final answer
    x = 18,022,170.90

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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.