Home / 13,287,907.20-19,931,860.80-8,481,318.60

Finding the Fourth Proportional to 13,287,907.20, 19,931,860.80 and 8,481,318.60

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Solution

The fourth proportional to 13,287,907.20, 19,931,860.80 and 8,481,318.60 is: 12,721,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287,907.20 : 19,931,860.80 = 8,481,318.60 : x
  2. Step 2: Convert to fraction form
    13,287,907.20/19,931,860.80 = 8,481,318.60/x
  3. Step 3: Cross multiply
    13,287,907.20x = 19,931,860.80 × 8,481,318.60
  4. Step 4: Simplify right side
    13,287,907.20x = 169,048,461,735,650.88
  5. Step 5: Solve for x
    x = 169,048,461,735,650.88/13,287,907.20
  6. Step 6: Final answer
    x = 12,721,977.90

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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.