Home / 13,188,665.80-19,782,998.70-12,012,934.60

Finding the Fourth Proportional to 13,188,665.80, 19,782,998.70 and 12,012,934.60

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Solution

The fourth proportional to 13,188,665.80, 19,782,998.70 and 12,012,934.60 is: 18,019,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,665.80 : 19,782,998.70 = 12,012,934.60 : x
  2. Step 2: Convert to fraction form
    13,188,665.80/19,782,998.70 = 12,012,934.60/x
  3. Step 3: Cross multiply
    13,188,665.80x = 19,782,998.70 × 12,012,934.60
  4. Step 4: Simplify right side
    13,188,665.80x = 237,651,869,574,985
  5. Step 5: Solve for x
    x = 237,651,869,574,985/13,188,665.80
  6. Step 6: Final answer
    x = 18,019,401.90

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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.