Home / 20,916.86-31,375.49-5,334.48

Finding the Fourth Proportional to 20,916.86, 31,375.49 and 5,334.48

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Solution

The fourth proportional to 20,916.86, 31,375.49 and 5,334.48 is: 8,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.86 : 31,375.49 = 5,334.48 : x
  2. Step 2: Convert to fraction form
    20,916.86/31,375.49 = 5,334.48/x
  3. Step 3: Cross multiply
    20,916.86x = 31,375.49 × 5,334.48
  4. Step 4: Simplify right side
    20,916.86x = 167,371,897.22
  5. Step 5: Solve for x
    x = 167,371,897.22/20,916.86
  6. Step 6: Final answer
    x = 8,001.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.