Home / 20,669.34-31,006.08-6,625.86

Finding the Fourth Proportional to 20,669.34, 31,006.08 and 6,625.86

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Solution

The fourth proportional to 20,669.34, 31,006.08 and 6,625.86 is: 9,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.34 : 31,006.08 = 6,625.86 : x
  2. Step 2: Convert to fraction form
    20,669.34/31,006.08 = 6,625.86/x
  3. Step 3: Cross multiply
    20,669.34x = 31,006.08 × 6,625.86
  4. Step 4: Simplify right side
    20,669.34x = 205,441,945.23
  5. Step 5: Solve for x
    x = 205,441,945.23/20,669.34
  6. Step 6: Final answer
    x = 9,939.45

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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.