Home / 20,656,906.30-30,985,359.45-18,389,424.70

Finding the Fourth Proportional to 20,656,906.30, 30,985,359.45 and 18,389,424.70

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Solution

The fourth proportional to 20,656,906.30, 30,985,359.45 and 18,389,424.70 is: 27,584,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656,906.30 : 30,985,359.45 = 18,389,424.70 : x
  2. Step 2: Convert to fraction form
    20,656,906.30/30,985,359.45 = 18,389,424.70/x
  3. Step 3: Cross multiply
    20,656,906.30x = 30,985,359.45 × 18,389,424.70
  4. Step 4: Simplify right side
    20,656,906.30x = 569,802,934,408,208.38
  5. Step 5: Solve for x
    x = 569,802,934,408,208.38/20,656,906.30
  6. Step 6: Final answer
    x = 27,584,137.05

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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.