Home / 13,188,000.30-19,782,000.45-7,424,817.90

Finding the Fourth Proportional to 13,188,000.30, 19,782,000.45 and 7,424,817.90

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Solution

The fourth proportional to 13,188,000.30, 19,782,000.45 and 7,424,817.90 is: 11,137,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,000.30 : 19,782,000.45 = 7,424,817.90 : x
  2. Step 2: Convert to fraction form
    13,188,000.30/19,782,000.45 = 7,424,817.90/x
  3. Step 3: Cross multiply
    13,188,000.30x = 19,782,000.45 × 7,424,817.90
  4. Step 4: Simplify right side
    13,188,000.30x = 146,877,751,038,968.06
  5. Step 5: Solve for x
    x = 146,877,751,038,968.06/13,188,000.30
  6. Step 6: Final answer
    x = 11,137,226.85

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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.