Home / 21,078,234.38-29,076,742.99-12,820,822.22

Finding the Fourth Proportional to 21,078,234.38, 29,076,742.99 and 12,820,822.22

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Solution

The fourth proportional to 21,078,234.38, 29,076,742.99 and 12,820,822.22 is: 17,685,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078,234.38 : 29,076,742.99 = 12,820,822.22 : x
  2. Step 2: Convert to fraction form
    21,078,234.38/29,076,742.99 = 12,820,822.22/x
  3. Step 3: Cross multiply
    21,078,234.38x = 29,076,742.99 × 12,820,822.22
  4. Step 4: Simplify right side
    21,078,234.38x = 372,787,752,611,421.25
  5. Step 5: Solve for x
    x = 372,787,752,611,421.25/21,078,234.38
  6. Step 6: Final answer
    x = 17,685,909.83

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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.