Home / 12,509,330.90-18,765,396.03-3,987,690.26

Finding the Fourth Proportional to 12,509,330.90, 18,765,396.03 and 3,987,690.26

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Solution

The fourth proportional to 12,509,330.90, 18,765,396.03 and 3,987,690.26 is: 5,981,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509,330.90 : 18,765,396.03 = 3,987,690.26 : x
  2. Step 2: Convert to fraction form
    12,509,330.90/18,765,396.03 = 3,987,690.26/x
  3. Step 3: Cross multiply
    12,509,330.90x = 18,765,396.03 × 3,987,690.26
  4. Step 4: Simplify right side
    12,509,330.90x = 74,830,586,916,990.95
  5. Step 5: Solve for x
    x = 74,830,586,916,990.95/12,509,330.90
  6. Step 6: Final answer
    x = 5,981,981.57

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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.