Home / 20,122,172.24-27,787,045.32-12,782,380.88

Finding the Fourth Proportional to 20,122,172.24, 27,787,045.32 and 12,782,380.88

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Solution

The fourth proportional to 20,122,172.24, 27,787,045.32 and 12,782,380.88 is: 17,651,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122,172.24 : 27,787,045.32 = 12,782,380.88 : x
  2. Step 2: Convert to fraction form
    20,122,172.24/27,787,045.32 = 12,782,380.88/x
  3. Step 3: Cross multiply
    20,122,172.24x = 27,787,045.32 × 12,782,380.88
  4. Step 4: Simplify right side
    20,122,172.24x = 355,184,596,810,061.50
  5. Step 5: Solve for x
    x = 355,184,596,810,061.50/20,122,172.24
  6. Step 6: Final answer
    x = 17,651,404.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.