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Finding the Fourth Proportional to 18,373,602.60, 27,560,403.90 and 12,893,855.40

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Solution

The fourth proportional to 18,373,602.60, 27,560,403.90 and 12,893,855.40 is: 19,340,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,373,602.60 : 27,560,403.90 = 12,893,855.40 : x
  2. Step 2: Convert to fraction form
    18,373,602.60/27,560,403.90 = 12,893,855.40/x
  3. Step 3: Cross multiply
    18,373,602.60x = 27,560,403.90 × 12,893,855.40
  4. Step 4: Simplify right side
    18,373,602.60x = 355,359,862,652,196.06
  5. Step 5: Solve for x
    x = 355,359,862,652,196.06/18,373,602.60
  6. Step 6: Final answer
    x = 19,340,783.10

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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.