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Finding the Fourth Proportional to 18,374,952.60, 27,562,428.90 and 12,895,205.40

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Solution

The fourth proportional to 18,374,952.60, 27,562,428.90 and 12,895,205.40 is: 19,342,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,374,952.60 : 27,562,428.90 = 12,895,205.40 : x
  2. Step 2: Convert to fraction form
    18,374,952.60/27,562,428.90 = 12,895,205.40/x
  3. Step 3: Cross multiply
    18,374,952.60x = 27,562,428.90 × 12,895,205.40
  4. Step 4: Simplify right side
    18,374,952.60x = 355,423,181,988,396.06
  5. Step 5: Solve for x
    x = 355,423,181,988,396.06/18,374,952.60
  6. Step 6: Final answer
    x = 19,342,808.10

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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.