Home / 20,407,825.78-28,161,736.68-12,672,703.24

Finding the Fourth Proportional to 20,407,825.78, 28,161,736.68 and 12,672,703.24

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Solution

The fourth proportional to 20,407,825.78, 28,161,736.68 and 12,672,703.24 is: 17,487,670.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,825.78 : 28,161,736.68 = 12,672,703.24 : x
  2. Step 2: Convert to fraction form
    20,407,825.78/28,161,736.68 = 12,672,703.24/x
  3. Step 3: Cross multiply
    20,407,825.78x = 28,161,736.68 × 12,672,703.24
  4. Step 4: Simplify right side
    20,407,825.78x = 356,885,331,668,662.88
  5. Step 5: Solve for x
    x = 356,885,331,668,662.88/20,407,825.78
  6. Step 6: Final answer
    x = 17,487,670.44

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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.