Home / 20,407,828.78-28,161,740.82-12,672,706.24

Finding the Fourth Proportional to 20,407,828.78, 28,161,740.82 and 12,672,706.24

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Solution

The fourth proportional to 20,407,828.78, 28,161,740.82 and 12,672,706.24 is: 17,487,674.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,828.78 : 28,161,740.82 = 12,672,706.24 : x
  2. Step 2: Convert to fraction form
    20,407,828.78/28,161,740.82 = 12,672,706.24/x
  3. Step 3: Cross multiply
    20,407,828.78x = 28,161,740.82 × 12,672,706.24
  4. Step 4: Simplify right side
    20,407,828.78x = 356,885,468,618,876.75
  5. Step 5: Solve for x
    x = 356,885,468,618,876.75/20,407,828.78
  6. Step 6: Final answer
    x = 17,487,674.58

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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.