Home / 22,767,872.04-31,420,408.14-12,978,138.60

Finding the Fourth Proportional to 22,767,872.04, 31,420,408.14 and 12,978,138.60

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Solution

The fourth proportional to 22,767,872.04, 31,420,408.14 and 12,978,138.60 is: 17,910,255.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,767,872.04 : 31,420,408.14 = 12,978,138.60 : x
  2. Step 2: Convert to fraction form
    22,767,872.04/31,420,408.14 = 12,978,138.60/x
  3. Step 3: Cross multiply
    22,767,872.04x = 31,420,408.14 × 12,978,138.60
  4. Step 4: Simplify right side
    22,767,872.04x = 407,778,411,709,488.19
  5. Step 5: Solve for x
    x = 407,778,411,709,488.19/22,767,872.04
  6. Step 6: Final answer
    x = 17,910,255.78

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1.5x scale

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.