Home / 20,775,657.70-31,163,486.55-13,122,907.30

Finding the Fourth Proportional to 20,775,657.70, 31,163,486.55 and 13,122,907.30

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Solution

The fourth proportional to 20,775,657.70, 31,163,486.55 and 13,122,907.30 is: 19,684,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775,657.70 : 31,163,486.55 = 13,122,907.30 : x
  2. Step 2: Convert to fraction form
    20,775,657.70/31,163,486.55 = 13,122,907.30/x
  3. Step 3: Cross multiply
    20,775,657.70x = 31,163,486.55 × 13,122,907.30
  4. Step 4: Simplify right side
    20,775,657.70x = 408,955,545,140,446.88
  5. Step 5: Solve for x
    x = 408,955,545,140,446.88/20,775,657.70
  6. Step 6: Final answer
    x = 19,684,360.95

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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.