Home / 12,291,320.70-18,436,981.05-8,509,074.30

Finding the Fourth Proportional to 12,291,320.70, 18,436,981.05 and 8,509,074.30

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Solution

The fourth proportional to 12,291,320.70, 18,436,981.05 and 8,509,074.30 is: 12,763,611.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291,320.70 : 18,436,981.05 = 8,509,074.30 : x
  2. Step 2: Convert to fraction form
    12,291,320.70/18,436,981.05 = 8,509,074.30/x
  3. Step 3: Cross multiply
    12,291,320.70x = 18,436,981.05 × 8,509,074.30
  4. Step 4: Simplify right side
    12,291,320.70x = 156,881,641,622,142.03
  5. Step 5: Solve for x
    x = 156,881,641,622,142.03/12,291,320.70
  6. Step 6: Final answer
    x = 12,763,611.45

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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.