Home / 20,531,916.72-28,333,190.56-11,239,255.98

Finding the Fourth Proportional to 20,531,916.72, 28,333,190.56 and 11,239,255.98

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Solution

The fourth proportional to 20,531,916.72, 28,333,190.56 and 11,239,255.98 is: 15,509,705.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531,916.72 : 28,333,190.56 = 11,239,255.98 : x
  2. Step 2: Convert to fraction form
    20,531,916.72/28,333,190.56 = 11,239,255.98/x
  3. Step 3: Cross multiply
    20,531,916.72x = 28,333,190.56 × 11,239,255.98
  4. Step 4: Simplify right side
    20,531,916.72x = 318,443,981,433,959.56
  5. Step 5: Solve for x
    x = 318,443,981,433,959.56/20,531,916.72
  6. Step 6: Final answer
    x = 15,509,705.49

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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.