Home / 21,078,233.38-29,076,741.61-12,820,821.22

Finding the Fourth Proportional to 21,078,233.38, 29,076,741.61 and 12,820,821.22

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Solution

The fourth proportional to 21,078,233.38, 29,076,741.61 and 12,820,821.22 is: 17,685,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078,233.38 : 29,076,741.61 = 12,820,821.22 : x
  2. Step 2: Convert to fraction form
    21,078,233.38/29,076,741.61 = 12,820,821.22/x
  3. Step 3: Cross multiply
    21,078,233.38x = 29,076,741.61 × 12,820,821.22
  4. Step 4: Simplify right side
    21,078,233.38x = 372,787,705,841,945
  5. Step 5: Solve for x
    x = 372,787,705,841,945/21,078,233.38
  6. Step 6: Final answer
    x = 17,685,908.45

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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.