Home / 20,664.79-31,001.87-6,625.80

Finding the Fourth Proportional to 20,664.79, 31,001.87 and 6,625.80

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Solution

The fourth proportional to 20,664.79, 31,001.87 and 6,625.80 is: 9,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,664.79 : 31,001.87 = 6,625.80 : x
  2. Step 2: Convert to fraction form
    20,664.79/31,001.87 = 6,625.80/x
  3. Step 3: Cross multiply
    20,664.79x = 31,001.87 × 6,625.80
  4. Step 4: Simplify right side
    20,664.79x = 205,412,206.81
  5. Step 5: Solve for x
    x = 205,412,206.81/20,664.79
  6. Step 6: Final answer
    x = 9,940.20

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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.