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Finding the Fourth Proportional to 16,291,805.40, 24,416,712.90 and 12,486,425.40

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Solution

The fourth proportional to 16,291,805.40, 24,416,712.90 and 12,486,425.40 is: 18,713,546.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,291,805.40 : 24,416,712.90 = 12,486,425.40 : x
  2. Step 2: Convert to fraction form
    16,291,805.40/24,416,712.90 = 12,486,425.40/x
  3. Step 3: Cross multiply
    16,291,805.40x = 24,416,712.90 × 12,486,425.40
  4. Step 4: Simplify right side
    16,291,805.40x = 304,877,464,139,067.62
  5. Step 5: Solve for x
    x = 304,877,464,139,067.62/16,291,805.40
  6. Step 6: Final answer
    x = 18,713,546.88

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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.