Home / 18,689,673.60-28,060,327.68-12,918,190.08

Finding the Fourth Proportional to 18,689,673.60, 28,060,327.68 and 12,918,190.08

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Solution

The fourth proportional to 18,689,673.60, 28,060,327.68 and 12,918,190.08 is: 19,395,129.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689,673.60 : 28,060,327.68 = 12,918,190.08 : x
  2. Step 2: Convert to fraction form
    18,689,673.60/28,060,327.68 = 12,918,190.08/x
  3. Step 3: Cross multiply
    18,689,673.60x = 28,060,327.68 × 12,918,190.08
  4. Step 4: Simplify right side
    18,689,673.60x = 362,488,646,677,325.44
  5. Step 5: Solve for x
    x = 362,488,646,677,325.44/18,689,673.60
  6. Step 6: Final answer
    x = 19,395,129.87

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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.