Home / 21,069,579.10-29,078,378.85-11,902,812.34

Finding the Fourth Proportional to 21,069,579.10, 29,078,378.85 and 11,902,812.34

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Solution

The fourth proportional to 21,069,579.10, 29,078,378.85 and 11,902,812.34 is: 16,427,214.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069,579.10 : 29,078,378.85 = 11,902,812.34 : x
  2. Step 2: Convert to fraction form
    21,069,579.10/29,078,378.85 = 11,902,812.34/x
  3. Step 3: Cross multiply
    21,069,579.10x = 29,078,378.85 × 11,902,812.34
  4. Step 4: Simplify right side
    21,069,579.10x = 346,114,486,602,975
  5. Step 5: Solve for x
    x = 346,114,486,602,975/21,069,579.10
  6. Step 6: Final answer
    x = 16,427,214.09

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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.