Home / 20,509,735.60-30,764,603.40-12,856,985.20

Finding the Fourth Proportional to 20,509,735.60, 30,764,603.40 and 12,856,985.20

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Solution

The fourth proportional to 20,509,735.60, 30,764,603.40 and 12,856,985.20 is: 19,285,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509,735.60 : 30,764,603.40 = 12,856,985.20 : x
  2. Step 2: Convert to fraction form
    20,509,735.60/30,764,603.40 = 12,856,985.20/x
  3. Step 3: Cross multiply
    20,509,735.60x = 30,764,603.40 × 12,856,985.20
  4. Step 4: Simplify right side
    20,509,735.60x = 395,540,050,597,669.62
  5. Step 5: Solve for x
    x = 395,540,050,597,669.62/20,509,735.60
  6. Step 6: Final answer
    x = 19,285,477.80

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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.