Home / 21,408,505.50-29,539,926.39-12,116,031.90

Finding the Fourth Proportional to 21,408,505.50, 29,539,926.39 and 12,116,031.90

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Solution

The fourth proportional to 21,408,505.50, 29,539,926.39 and 12,116,031.90 is: 16,717,967.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408,505.50 : 29,539,926.39 = 12,116,031.90 : x
  2. Step 2: Convert to fraction form
    21,408,505.50/29,539,926.39 = 12,116,031.90/x
  3. Step 3: Cross multiply
    21,408,505.50x = 29,539,926.39 × 12,116,031.90
  4. Step 4: Simplify right side
    21,408,505.50x = 357,906,690,464,891.88
  5. Step 5: Solve for x
    x = 357,906,690,464,891.88/21,408,505.50
  6. Step 6: Final answer
    x = 16,717,967.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.