Home / 12,920,415.40-19,379,067.90-5,346,591.40

Finding the Fourth Proportional to 12,920,415.40, 19,379,067.90 and 5,346,591.40

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Solution

The fourth proportional to 12,920,415.40, 19,379,067.90 and 5,346,591.40 is: 8,019,243.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,415.40 : 19,379,067.90 = 5,346,591.40 : x
  2. Step 2: Convert to fraction form
    12,920,415.40/19,379,067.90 = 5,346,591.40/x
  3. Step 3: Cross multiply
    12,920,415.40x = 19,379,067.90 × 5,346,591.40
  4. Step 4: Simplify right side
    12,920,415.40x = 103,611,957,774,156.06
  5. Step 5: Solve for x
    x = 103,611,957,774,156.06/12,920,415.40
  6. Step 6: Final answer
    x = 8,019,243.54

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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.